Question

Which of the following compounds is a molecule?

a.NaCl
b.MgBr2
c.H2
d.AlCl3

Answer 1

I think this will help- http://education.jlab.org/qa/atoms_and_elements.html

Answer 2

Then it's H2! :>

Answer 3

H2 because it consist of only one element.

Answer 4

false reasoning, pratu. A molecule is an electrically neutral group of two or more atoms held together by covalent chemical bonds. Between the two hydrogen atoms, there is a covalent bond. The others are all salts held together by ionic bonds.