Chapter 8, Problem 38QP

Classify the following bonds as covalent, polar covalent, or ionic, and explain: $\left(\text{a}\right){\text{ CC bond in H}}_{\text{3}}{\text{CCH}}_{\text{3,}}\left(\text{b}\right)\text{ the KI bond in KI, }\left(\text{c}\right){\text{ the NB bond in H3NBCI}}_{\text{3}}\text{, }\left(\text{d}\right){\text{ the CF bond in CF}}_{\text{4}}\text{.}$