How does the geometry of an ionic compound compare to that of a molecular compound?

Explanation:

Ionic compounds typically have much higher melting points than molecular compounds.To melt a molecular substance, you need to break these weak inter molecular forces between neutral molecules, which is why ionic compounds generally have much higher melting points than molecular compounds.

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.  

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.