Answer to Question #247756 in Organic Chemistry for Fatima Hussain

Question

Element A has three electrons in its outer energy level and is located in period 4. How does the number of its valence electrons compare with that of element B, which is In group 13 and period 6?

Answer 1

Element A: Ga

Element B: Tl

The same number of valence electrons, the electronic formula of the last level:

$ns^2np^1$