chemistry question F4 URGENT

The answer is A.

A.
Fluorine (F2) molecule has 6 lone pairs of electrons.
Each F atom has 7 electrons in the outermost shell, and 1 of them is used to form the F-F single bond. Therefore, 6 electrons are left in each F atom to form 3 lone pairs.
Total number of lone pairs in F2 = 3 x 2 = 6

B.
Hydrogen (H2) molecule does not have lone pairs of electrons.
Each H atom has 1 electron in the outermost shell, and it us used to form the H-H bond. Therefore, no electron in the outermost shell is left to form the lone pairs of electron.

C.
Nitrogen (N2) molecule has 2 lone pairs of electrons.
Each N atom has 5 electrons in the outermost shell, and 3 of them are used to form the NΞN triple bond. Therefore, 2 electrons are left in each N atom to form 1 lone pair.
Total number of lone pairs in N2 = 1 x 2 = 2

D.
Oxygen (O2) molecule has 4 lone pairs of electrons.
Each O atom has 6 electrons in the outermost shell, and 2 of them are used to form the O=O double bond. Therefore, 4 electrons are left in each O atom to form 2 lone pairs.
Total number of lone pairs in O2 = 2 x 2 = 4
=