Question

write the electronic configuration of chlorine and magnesium on the basic of sub shell and also write down their position in periodic table​

Answer 1

HERE IS YOUR ANSWER

Explanation:

chlorine :

atomic number:17

electronic configuration: K L M N valency

2 8 7 8-7=1

magnisium:

atomic number:12

electronic configuration: K L M N valency

2 8 2 2 ( because of rule : the first rule says that the the number at the last shell is between 1-4 then the number in the last shell will be its valency .second rule says that if it is greater than 4 then we have to subtract the last number from 8 and it will be the valency

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