When atoms from group ia combine with atoms from group vii:
a.) a nearly 100% covalent bond forms
b.) the bond will be ionic.
c.) a weak bond will form.
d.) the resulting compound will be very unstable.
e.) a great deal of energy is absorbed.

I believe the answer is B. the bond will be ionic 

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom