Question

6. Which of the following best helps to account for the fact that the F-ion is smaller than the 02-ion?

a. F has a larger nuclear mass than 0 has.
b. F has a larger nuclear charge than OP has.
c. F is more electronegative than O2-is.
d. F is more polarizable than 02 is.​

Answer 1

F has a larger nuclear charge than
`O_2` account for the fact that the F-ion is smaller than the
`O_2`-ion

Step-by-step explanation:

The 'effective nuclear charge' of an polyelectronic atom, denotes the net positive(+ve) charge that experienced by an electron. The "strength of the nuclear charge" can be determined based on the oxidation-number of an atom which determines the number of electron that is lost or gained by elements.

F-ion is smaller when compared with O2-ion because of the larger nucleus charge of the F-ion. This is because of the presence of more protons in F-ion that pulls the electrons on the shell’s outside, thus making it smaller.