Determine whether the following statements are true or false.

$($a$)$ A covalent bond is formed between two atoms whose difference in electronegativity is less than $1\mathrm{.}9.$

True

False

$($b$)$ If the difference in electronegativity between two atoms is zero $($i$.$e$.,$ they have identical electronegativities$),$ then the two atoms can form polar covalent bond.

True

False

$($c$)$ A covalent bond formed by sharing four electrons is called a double bond.

True

False

$($d$)$ In the nitrogen molecule $(N_2),$ the three shared pairs of electrons complete the valence shell of each nitrogen.

True

False

$($e$)$ In the molecule $C{H}_4,$ each hydrogen has an electron configuration like that of helium and carbon has an electron configuration like that of neon.

True

False