Which one of the following elements exhibit maximum number of valence electrons?
(a) Na
(b) Al
(c) Si
(d) P
Ans (d)
Sol
Na – Group 1 – 1 valence electron
Al – Group 13 – 3 valence electrons
Si – Group 14 – 4 valence electrons
P – Group 15 – 5 valence electrons
Hence option (d) is correct.