Which type of bond will most likely be found in hbr?
an ionic bond
a metallic bond
a polar covalent bond
a nonpolar covalent bond

To know that compare the electronegativitis of the two elements.

The electronegativity of H is 2.2
The electronegativity of Br is 2.96

The difference does not seem enough to cause ionic bond. Then it is most likely thaty they form a polar covalent bond.

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.