Question

an element has its electron configuration 2,8,2 Now answer the following question What is the valency of this element

Answer 1

Electronic Configuration=2,8,2

Atomic Number=12

Mass Number=24.305u

Element=Magnesium (Mg)

Valency=2+

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Answer 2

Given configuration is 2,8,2...

Then atomic number is 12....

Element would be "MAGNESIUM"

Valence is "2".

Hope this will help you buddy