The chemical reactivity increases for the
seriescf4 forthis?
a) the availability of d- orbitals for the non - c atom.
b) the decrease in bond polarity from c-f to c-i.
c) the increase in bond polarity from c-f to c-i.
d) the increase in size for the non-c atom.

D) The increase in size for the non-C atom

Explanation:

Among the Halogens, chemical reactivity decreases from F to I and also Atomic sizes increases from F to I. The bond length formed between C and The halogens decreases in strength from CF to CI which means the stronger the bond, the less reactive the compound.

the answer is learned

i think it's c. i'm not sure but i think so.