Which of the following is TRUE about when two atoms form a bond? a. Repulsion is greater than attraction b. Neither atoms will have a full valence shell c. Potential energy is at a minimum

b:   Neither atoms will have a full valence shell

Explanation:

I think sooo

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.  

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.