ICSE Class 10 Chemistry 2020 Solved Paper
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Draw the electron dot diagram for the compounds given below. Represent the electrons by (.) and ( x
[Atomic No. :Ca = 20 , O = 8 , Cl = 17 , H = 1
[Atomic No. :
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Question : 43
Total: 86
Calcium oxide
Solution:
Calcium oxide − CaO
Ca = 20 = 2 , 8 , 8 , 2
O = 8 = 2 , 6
Ca − 2 e − → Ca 2 +
O + 2 e − → O 2 −
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