1. What is the name of the following binary compound?MgCl2

magnesium chloride

magnesium dichlo

manganese dichloride

manganese chloride

magnesium (II) chloride

2. Aqueous HI is known as

hydroiodic acid.

hydrogen iodide.

helium iodide.

hydrogen monoidide.

hyperiodous acid.

3. Gaseous HCl is known as

hydrogen chloride.

hydrochloric acid.

monohydrogen monochloride.

hydride (I) chloride.

hydrogen monochlorine.

4. Which one of the following elements does not exist as a diatomic molecule?

H

N

O

F

B