Ahypothesis is a possible explanation or answer to a question. hypotheses should be testable. which of the following sentences is the best hypothesis?
a.
if a person falls asleep, then their heart rate will decrease.
b.
if a pillbug becomes frightened, then it will roll up into a ball.
c.
it is better to live in a city than in the country.
d.
why are plant leaves green?

heat or electricity in the atmosphere- c.

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.