In which of the following does the central atom OBEY the octet rule.

Question

-BF3

-PF3

-SF4

-SiF6-2

-XeF4

Answer 1

PF₃ has P as the central atom, it is obeys the octet rule. It has 3 bonding pairs (6 electrons) and it also has 1 lone pair (2 electrons). This gives it 8 electrons and thus obeys the octet rule.