6. which of the following best 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:

F has a larger nuclear charge thanaccount for the fact that the F-ion is smaller than the -ion

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.  

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.