A certain compound has an empirical formula of CH3. What must be true about this compound?

A.

It contains three times as many hydrogen atoms as carbon atoms.

B.

It consists of 75% hydrogen by mass.

C.

Each molecule contains exactly four atoms.

D.

Each carbon atom is bonded to three hydrogen atoms.

Explanation:

it has 75% Hydrogen by mass

If we assume CH3 as 100% which is 4 parts.

Then 3 parts corresponds to Hydrogen which is 75% and remains is carbon,25 %

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.