chemistry oxidation numbers and ionic compounds

Cu2+ NO31- 8. Al2O3 5. ��Wa���5���Ң���q�KBZ��f To remove the tarnish, you can warm the tarnished object with some aluminum foil (in water with a small amount of baking soda). This worksheet first covers the importance of valence electrons and oxidation number to making ionic compounds, then how they are named. Many elements only have one possible oxidation number, but other elements have several possible oxidation numbers CaI2 11. are one-atom ions Oxidation numbers: + or –number � ��޷*�������ޡV��k��h�*�S>0�hT�W�3Q+ߎ����H�k���m���7d4;'_Z�g�����8�#T�����3�j�? <> v ������������ � � ������������ȸ�������ȸ�����ȸȸ������ȸȸ������ȸȸ��� 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ H*OJ QJ 6�CJ OJ QJ 6�CJ \�5�CJ CJ OJ QJ CJ H*OJ QJ H� � � � � � / 1. ______________________ 19. 1. Oxidation Number Chart Chemical Species Examples Oxidation Number All atoms in ELEMENTS (monatomic and diatomic) Mn (s), O 29g), Fe (s) 0 IONIC COMPOUNDS Alkali (Group 1) Na, Li, K, Rb, Fr Halogens F, Br, I Na cl, K 2 SO 4 Ba F 2, NH 4 Br +1-1 HYDROGEN in �!�aP�/�[ȹ;��e㜤��9J���/�H�/@��B�L"e� if�2Z���*�J�6�t#)��S�ϠН)>�F� z�{���q��Җ� �ۚ�u���n��d:��- ����Y� �8��z��z��!ͿDy��搖9G�tHˤCZF�f�!-�i�vɅ. ______________________ 13. NaCl - Sodium Chloride, MgO - Magnesium oxide, AlCl 3 - Aluminium trichloride, Ca2+ ClO31- 5. For example, in the formation of calcium chloride (CaCl 2 ), calcium loses two valence electrons, and the two chlorine atoms gain one electron each. The oxidation number of a monatomic (composed of one atom) ion is the same as the charge of the ion. Oxidation Numbers Each Sodium atom gives up 1 electron, so 2 Sodium atoms (Na 2) will give up 2 electrons and have a charge of 2+. NH41+ NO21- 19. Compounds and ions. � 3 0 obj i 4 @�� 4 N o r m a l CJ _HmH sH tH 8 @ 8 H e a d i n g 1 $@&. � 7. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. �|�8JVN �6���T�T�+��v�B��P��i�/Ҿ;���.��K�i_��P��D�em��2 ��i@��H�4@Z�a����ʩw�Oh��`���'���bViޮ�sU�W �wt�i��Uͻw��5�/���Il~ѡO�&G�@��SJs�֫�w ��Sa��%�!-3�h3Ӑ�����4��LCZf�2�s}�%+�6z�gzq��ꦘ��4g��?�7pI�g���8��c�֎mX�rH�^�h��CZ�rH�^�h��CZ�rH�^>w���咕S7,L� �Cܰ0��0�0/?�݊U=�o�����x�A�$K�>�]&�ʴ�&�Đf�n��]�6�i�.L��´�.H�ta�D�Mt��������!�U�Ɓ���Waj�{gִ�n ��k+�� Li2CO3 For each of the following compounds, write� A) the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound. � jhester. Ionic Compounds Chemical Formulas - Tells 2 things. x���mo9��#���Nc��' �fwoi���qBD"���?W�=~d*�3UhT]5�*�_=~������Ǐ����������ba� �霪�/K�Zc�(�u��VUP�\�8X�t�k}�[j[3Ѿ:�Zo�Y]�](�Ql��f���wkO6 \o��'������7�Q�� �~zyZU����J3�k�j�Bw��"�쯐���f��쯐���f������%;oY��ݍ跺V4*����6ZiӴ՛�¢�yשv\R�eĦ��t����E�u�'M�B���Խڗ �Ҫ��Pe�t��Q7����VG��������z�V���� ��ϵ��n�U5�0�Jckյ�J��zV������ܮ�]]W���_�lj�:'������������^�������ڭ�w��`����ݨݽ#㋑G��""�IS�B�� i�V��3��qK*5�0r� $2u�*m���s�н�\���E����Z} W��ܐ�]|�}�����^u�޴����yE��/�o�Su�%�.���^��oT����D�7W���g���������y��;ߗ�J~�r�T��6R��oK��{��O��o����;�}�z���xI��N��O The less electronegative atom is assumed to lose the bonding electrons, so its oxidation number will be positive - it mimics a cation. NaF 2. Chemistry: Oxidation Numbers and Ionic Compounds Write the correct formula for the compound formed by each of the following pairs of ions. CuF2 14. ______________________ 14. s ______________________ 2. ʒ�SŽ0_k�au�{a�wüѥ��������>�|�?�U{g�}i�!�a�F�(z�^����`������K�����x��y!�ƴ�1��CZ��2ƈ6cicH�ϸ�Q0�l�"(��8��u����=�is⶙�u1��E:*���C/��\{g�R2n��|�e7��1����s�Q�"R��3����$�M��}�Z t Mg(NO3)2 17. N The oxidation number of oxygen in compounds is usually -2. The sum of the oxidation numbers of all the atoms in an ion or molecule is equal to its net charge. � In compounds with nonmetals, the oxidation number of hydrogen is +1. Edit. Oxidation Numbers and Ionic Compounds DRAFT. ______________________ 17. Cu(NO3) 2 9. 2 Na1+ Cr2O72- ( 1 N [ � � � � � � � % ' S U \ ] _ � � � � � � � � � � � � � � ( * 1 2 4 ] _ f g i � � � � � � � � � � � � � � � � � 2 3 ` a b c e f � � � � � � � � � � # $ % � � � ������������������������������������������������ ������������������������������� CJ H*OJ QJ CJ H*OJ QJ 6�CJ OJ QJ 6�CJ OJ QJ 5�CJ V ( N O � � � � � L M � � � � � � ! " A monatomic ion has an oxidation number equal to its charge. � Mg2+ 2 NO31- 18. Ni2+ SO42- 3. V W � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ( * W X � � � � � � L M ~  � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � % & ' ( T U W X Y Z � � � � � � � � . Ratios of the atoms in Compound Subscripts represent the number of ions of each element in an ionic compound A . The oxidation number of hydrogen in most compounds is + 1. In ionic compounds, the ionic charge of an atom is its oxidation number. � � Li1+ CO32- 10. Formula unit. charge 3. The oxidation state of oxygen goes from 0 to, indicating reduction. ______________________ 16. (NH4)3PO4 15. r Such numbers are written to the _____ of the symbol for the element. 85% average accuracy. They are positive and negative numbers used for balancing the redox reaction. CuNO3 8. For water, oxygen has a oxidation number while hydrogen has a. � , $ $ ( � � T T T T T T T T A C C C C C C $ x � � g T T T T T g $ T T | $ $ $ T : T T A $ T A $ � $ � 5 T H e\���( � � ? To determine what the oxidation number is, you must use the anion (negative ion) to determine what the positive oxidation number is. ______________________ 5. � Mg(NO3)2 17. Pb4+ O2- 9. (NH4)3PO4 15. 1. � � % 5 � 0 � - � � � � 5 $ ( ( � Name: ________________________ Hour: ____ Date: ___________ Chemistry: Oxidation Numbers and Ionic Compounds Write the correct formula for the compound formed by each of the following pairs of ions. CuF2 14. ______________________ 7. Play this game to review Chemical Bonds. The oxidation number of oxygen in most compounds is − 2. 11. Potters apply a glaze containing many elements - often transition metals - to their unfinished pieces of work. Have you ever taken a pottery class or wondered how a potter gets such pretty glazes on their art? Chemistry. 0. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Na1+ F1- 1. NH41+ P3- 6. � � Save. � ______________________ 18. The oxidation number of a Group VIIA element in a compound is -1, … � � Cu2+ 2 F1- 15. Pb4+ O2- 9. ______________________ 6. NH4NO2 18. 2 0 obj Learn how to name monatomic ions and ionic compounds containing monatomic ions, ... Science AP®︎/College Chemistry Atoms, compounds, and ions Compounds and ions. � Oxidation Numbers and Ionic Compounds Subject: Chemistry Author: Jeff Christopherson Last modified by: Jeff and Indu Christopherson Created Date: 1/16/2004 4:23:00 PM Other titles: Oxidation Numbers and Ionic Compounds Category: Chemistry - Chemical Formulas Others, notably the nonmetals and the transition elements, can assume a variety of oxidation numbers; for example, nitrogen can have any oxidation number between −3 (as in ammonia, NH 3 ) and +5 (as in nitric acid , HNO 3 ). 7 8 ` a � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � $a$ " # % 1 5 6 > @ G H J V [ \ ] _ g i o q ~ � � � � � � � � � � � � � J T U c e g l m o q | }  � � � � � � � � � � � � � � � � � � � � � ���������������������������������� ���ۻۭۻ������ۻ�˻�����ۻۭ�˻� 5�B*CJ OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ H*OJ QJ CJ H*OJ QJ CJ OJ QJ D� � � � J K L t u � � � � � � + , S T � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ... the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound. The oxidation number of diatomic and uncombined elements is zero. Ca2+ ClO31- 5. The alkali metals (group I) always have an oxidation number of +1. The oxidation state, sometimes referred to as oxidation number, describes the degree of oxidation (loss of electrons) of an atom in a chemical compound.Conceptually, the oxidation state, which may be positive, negative or zero, is the hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic, with no covalent component. � q Oxidation Numbers and Ionic Compounds DRAFT. Cu1+ NO31- 7. Na 2 CO 3 12. � 3 NH41+ PO43- 16. ______________________ 4. Li1+ CO32- 10. Al3+ O2- 4. � b <> stream � Chemistry A Ionic Compounds Name_____ Hour: _____ Page 7 Worksheet # 4-Calculating Oxidation Numbers The charge an element has in a compound in called an oxidation number. ______________________ 10. There is no space between the element name and the parenthesis. In the case of an ionic compound, oxidation numbers are assigned based on the number of electrons transferred between reacting species. � Certain elements assume the same oxidation number in different compounds; fluorine, for example, has the oxidation number −1 in all its compounds. 4. represents the simplest ratio of the ions involved Monatomic ions. K2S 3. Roman numerals are shown after the cation in parenthesis( ) to indicate the oxidation number. Na2CO3 12. the reason the oxidation number for sulfur is +6 is because there is a rule that says O (oxygen) has an oxidation number of -2 so since there are 4 oxygen atoms that means that 4x-2 will equal -8 so that means that sulfur will have an oxidation number of +8 to balance the equation, but since there is an overall charger of negative to on the compound, you will get +6 since +8-2 = +6. 1. Ga(ClO3)3 13. FeSO4 16. a year ago. Since there are two oxygen atoms in carbon dioxide, the total of the oxidation numbers corresponding to each oxygen is -4. Fe2+ SO42- 17. R The oxidation number for an element in a covalent compound is by taking the oxidation number to be equal to the charge that the element would carry, if all the bonds in the compound were regarded as ionic instead of covalent. _____ 13. � oxidation number, and electrons. Na2Cr2O7 20. Oxidation Number: The number that is assigned to an element to indicate the loss or gain of electrons by an atom of that element is called as the oxidation number. 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R This is because the metals in the glaze are oxidized, and this chemical reaction causes the met… � Oxygen almost always has an oxidation number of -2, except in: peroxides (e.g. The more electronegative atom is assumed to take the bonding electrons, so its oxidation number will be negative - it mimics an anion. Fluorine in compounds is always assigned an oxidation number of -1. ______________________ KEY Chemistry: Oxidation Numbers and Ionic Compounds Write the correct formula for the compound formed by each of the following pairs of ions. 1 The Roman numerals in fact show the oxidation number, but in simple ionic compounds this will always be the same as the metal’s ionic charge. � Tarnish is from the oxidation of silver in the presence of sulfur-containing compounds (in the air or in food) to give black Ag2S. The alkaline earth metals (group II) are always assigned an oxidation number of +2. Exceptions include OF 2 because F is more electronegative than O, and BaO 2, due to the structure of the peroxide ion, which is [O-O] 2-. � Na1+ F1- 1. NH4NO2 18. u CaI 2 11. � A � This notation is usually seen with metals since they commonly display more than one oxidation state or valence. ______________________ 3. KC2H3O2 19. In compounds, fluorine is assigned a −1 oxidation number; oxygen is usually assigned a −2 oxidation number [except in peroxide compounds (where it is −1) and in binary compounds with fluorine (where it is positive)]; and hydrogen is usually assigned a +1 oxidation number [except when it exists as the hydride ion (H −), in which case rule 2 prevails]. KC2H3O2 19. K1+ S2- 2. K1+ C2H3O21- 20. � NH41+ P3- 6. b��S1��M=Lfƥ����f�|�CZ�:rѲp���MP. � _____ 12. CaI2 11. endobj endobj ______________________ 8. � Ga3+ 3 ClO31- 14. ~ Oxidation Number Example -An example is NaCl with the following ions; Na+ and Cl- -Therefore the number of sodium in the compound is 1+ and the oxidation number of chlorine is 1-. in CF4the oxidation number of the C is +4 the oxidation number of each of the F's is -1. %���� Preview this quiz on Quizizz. K1+ S2- 2. 2 Na1+ CO32- 13. one. By definition, the oxidation number of an atom is the charge that atom would have if the compound was composed of ions. For example, the oxidation numbers of K +, Se 2 −, and Au 3 + are + 1, − 2, and + 3, respectively. Na2CO3 12. So, when it comes to ionic compounds, their ions have actual charges. Positives give electrons; negatives receive. 7 ______________________ 20. 4 0 obj ______________________ 9. The oxidation number of a Group IA element in a compound is +1. 2. � What is the charge for an ion in group 1? Some elements have more then one oxidation number and when naming a compound these must be identified. The oxidation number of a monatomic ion equals the charge of the ion. According to the rules to calculate oxidation number, which can be found in the previous subsection, the oxidation number of oxygen in its compounds (excluding peroxides) is -2. endobj Worksheet search result by word Mixed naming worksheet number 2 from naming ionic compounds worksheet answers , source:ftxs8.com The configuration of electrons will most likely be set inside the analysis from the atomic structure. � | � Calculating molar mass and number of moles. ' ( * 5 6 D F H O P R ^ _ ` a o q s x z | }  � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �������������������������������������������������������������� 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ OJ QJ CJ H*OJ QJ G� � � � � � � � � � ��������յյ�� 5�B*CJ H*OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ H*OJ QJ CJ OJ QJ ��/ ��=!��"��#��$��%� Ga(ClO 3) 3 13 . Ni2+ SO42- 3. The oxidation state from hydrogen goes from 0 to, indicating oxidation. Write the formulas for the four ionic compounds that can be made by combining the cations Mg2+ and Fes+2.43 (a) (NH 4) 2 CO 3 (d) AlPO 4 (b) CaI 2 (e) AgCH 3 CO 2 Ga(ClO3)3 13. � � ______________________ For each of the following compounds, write� A) the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound. ______________________ 15. ______________________ 12. Naming monatomic ions and ionic compounds. Roman Numerals in Ionic Compound Names A Roman numeral in parentheses, followed by the name of the element, is used for elements that can form more than one positive ion. The alkali metals (group I) always have an oxidation number of +1. � Cu1+ NO31- 7. � Ca(ClO3) 2 6. Cu2+ NO31- 8. ��ࡱ� > �� 0 2 ���� / �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� M �� bjbj�=�= $ �W �W The oxidation number of an atom is zero in a neutral substance that contains atoms of only one element. What is the charge for an ion in group 1? 0 Edit. For the synthesis of water, the oxidation numbers of the free elements (hydrogen and oxygen) are zero. Oxidation numbers also play an important role in the systematic nomenclature of chemical compounds. This glaze goes on dull, and it is usually a pastel color, but the finished product comes out of the kiln (or oven) with bright shiny colors. Z The Old, Classic, or Common Way of Naming Names of some ionic compounds Common, or trivial, names of compounds are sometimes used in informal conversations between chemists, especially older chemists. NiSO4 4. ` In the chemical formula for any ionic compound, ... _____ is a small number used to represent the number of ions of a given element in a chemical formula. Elements make up a Compound. The oxidation number of a free element is always 0. 11. 1 0 obj 9 Group 1 metals in the elemental form, such as hydrogen, lithium and sodium, have an oxidation number of +1; group 2 metals in their elemental form, such as magnesium and calcium, have an oxidation number of +2. Ca2+ 2 I1- 12. Dalton's atomic theory. Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion, for example: Rule 3: The sum of all oxidation numbers in a neutral compound is zero. Na2Cr2O7 20. The oxidation number of a Group IIA element in a compound is +2. !-Si�BD�)��L!�e (NH4) 3P 7. <>>> Al3+ O2- 4. FeSO4 16. In ionic compounds containing metal ions, the name is formed with the name of the metal (with the positive oxidation number), followed by the name of the non-metal (with the negative oxidation number) with the added suffix '-ide'.. For example: HCl - Hydrogen Chloride,. X Losing 1 electron Gaining 1 electron An ionic bond The Symbols Ionic Compounds Mg 2+ F1-The number of electron arrows comes from the oxidation numbers. � �� �� �� l ( � S ��?�}�(����6�i}H��#ڌ>�e�!-�/��_G_d�:�:���(�y��t\�A�ڡ����wq�r '��]��`�t:�����*P�T���k��|Y�S����꓍��ϵ�N�`O6 }��{C��6]�݉��]>; �����=��OO6t=���Y_�/,KǕ����mj�/դv�T�>c�b�!�lL��i�xof4�Y4��b��;M=L�a���|gS�6e��eئQ'w��d.�Xw�RVR͸S�%f���Zz��Q)}��} ��!U��H��)6�j�Z�,����M��Wǿ!��t�8��/`/�u:�{]��߯����5�M�N�^m�n�u8�|��(����O$������rճ��UZ1Ka�nTۍ-�����0�b�F\�8�â���q֪n��f��qJ#r�+�I��Zb�� ��V҃[�q��L�rH˹�M��M���� Ӧ� Ӧ�`��%7��z��0p&���;1۷]��]vd���=��;�����Lɗ�?$Q�-=�*Z2ua��X@�&� -#�ib�6!i1L�ô �Y; The oxidation number of a Group 2 element in a compound is +2. PbO2 10. + 1 group 1 positive and negative numbers used for balancing the redox reaction they commonly display than! Was composed of one atom ) ion is the same as the charge for an ion or molecule is to! 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Also play an important role in the systematic nomenclature of chemical compounds elements zero! The systematic nomenclature of chemical compounds of water, oxygen has a actual charges oxygen ) are zero group... Atoms of only one element important role in the systematic nomenclature of chemical compounds oxygen goes from 0,... Carbon dioxide, the total of the atoms in compound Subscripts represent number! Number equal to the _____ of the symbol for the synthesis of water, the oxidation of! Numerals are shown after the cation in parenthesis ( ) to indicate the number...: peroxides ( e.g compounds with nonmetals, the oxidation number of a IIA! From 0 to, indicating oxidation are zero used for balancing the redox reaction, in. Always has an oxidation number of oxygen goes from 0 to, indicating reduction used for the! Is − 2 it mimics a cation ion is the charge that atom would have if the compound and. 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Are two oxygen atoms in carbon dioxide, the oxidation number while has! An ionic compound a number of each of the ions involved monatomic ions notation is usually seen metals... Group I ) always have an oxidation number of hydrogen in most compounds is + 1 on the ion the.

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