A. monotomic ionic
b. polyatomic covalent
c. polyatomic ionic
d. binary molecular
1
sulfur hexafluoride is an example of a
a. monatomic ion
b. polyatomic ion
chinary compound
d. polyatomic compound

Binary compound

Explanation:

Binary compounds:

The compounds which are made up of the atoms of only two elements are called binary compounds.

For example:

The following compounds are binary:

HCl

H₂O

NH₃

HCl is binary because it is composed of only hydrogen and chlorine. Ammonia is also binary compound because it is made up of only two elements nitrogen and hydrogen.

water is also binary because it is also made up of only two elements hydrogen and oxygen.

SF₆ is binary compound because it consist of atoms of only two elements i.e, sulfur and fluorine.

1. they vary with a higher number because boiling is way hotter than melting

a corroding iron, if that's one of your choices