Question

1.05 - test review - counting atoms
+ 3h₂ → 2nh₃
coefficient (label pointing to 3)
subscript (label pointing to 3 in nh₃ or 2 in h₂)
the small number behind an element symbol is a ____ and it tells you how many ____ of that element there are.
○ coefficient, molecules
○ subscript, molecules
○ subscript, atoms
○ coefficient, atoms

Explanation:

To solve this, we recall the definitions: A subscript is the small number behind an element symbol in a chemical formula, and it represents the number of atoms of that element. A coefficient is a number in front of a chemical formula, representing the number of molecules. So the small number behind an element symbol is a subscript, telling the number of atoms of that element.

Answer:

C. subscript, atoms