Questions: How many barium atoms are in the compound below? Ba(MnO4)2

Determine the number of barium atoms in the compound \(\mathrm{Ba}\left(\mathrm{MnO}_{4}\right)_{2}\).

Identify the chemical formula components.

The chemical formula \(\mathrm{Ba}\left(\mathrm{MnO}_{4}\right)_{2}\) consists of one barium atom (\(\mathrm{Ba}\)) and two permanganate ions (\(\mathrm{MnO}_{4}\)).

Count the barium atoms.

In the compound \(\mathrm{Ba}\left(\mathrm{MnO}_{4}\right)_{2}\), there is only one barium atom present. The subscript outside the parentheses applies only to the \(\mathrm{MnO}_{4}\) group, not to the barium atom.

\(\boxed{1}\)

The number of barium atoms in the compound \(\mathrm{Ba}\left(\mathrm{MnO}_{4}\right)_{2}\) is \(\boxed{1}\).