solution for additional exercise topic3-5.pdf

solution for additional exercise topic3-5.pdf - Use Lewis...

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( ) Use Lewis symbols to represent the reaction that occurs between Ca and F atoms. ( ) What is the chemical formula of the most likely product? ( ) How many electrons are transferred? ( ) Which atom loses electrons in the reaction? Write electron configurations for the following ions, and determine which have noble-gas configurations: ( ) Cd 2 + , ( ) P 3 - , ( ) Zr 4 + , ( ) Ru 3 + , ( ) As 3 - , ( ) Ag + . (a) Cd 2+ : [Kr]4d10 (b) P 3 : [Ne]3s2 3p6 = [Ar], noble-gas configuration (c) Zr 4+ : [Ar]4s2 3d10 4p6= [Kr], noble-gas configuration (d) Ru 3+ : [Kr]4d5 (e) As 3 : [Ar]4s2 3d10 4p6= [Kr], noble-gas configuration (f) Ag + : [Kr]4d10 ( ) What is the trend in electronegativity going from left to right in a row of the periodic table? ( ) How do electronegativity values generally vary going down a column in the periodic table? ( ) True or false: The most easily ionizable elements are the most electronegative. (a) The electronegativity of the elements increases going from left to right across a row of the periodic table. (b) Electronegativity generally decreases going down a family of the periodic table. (c) False.
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