A sample of propane, C3H8 contains 11.8 moles of carbon atoms. How many total moles of atoms does the sample contain?
Express the total number of moles of carbon and hydrogen numerically.

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.  

the answers would be

the first one and the second one