Question

Question 11
Which one of the following elements exhibit maximum number of valence electrons?

(a) Na
(b) Al
(c) Si
(d) P

Answer 1

Option (d) is correct.
Sodium belongs to group 1 and has 1 valence electron. Aluminium belongs to group 13 and has 3 valence electrons. Silicon belongs to group 14 and has 4 valence electrons. Lastly, phosphorus belongs to group 15 and has 5 valence electrons. Hence we can see that phosphorus has the maximum number of valence electrons.