Question

How many oxygen atoms are in one unit of the compound ba(oh)2? 3 1 2 4?

Answer 1

Answer: The correct answer is 2.

Step-by-step explanation:

The given chemical formula of the compound is
`Ba(OH)_2`

It is formed by the combination of barium atoms, oxygen atoms and hydrogen atoms.

In 1 mole of barium hydroxide, 1 mole of barium atoms, 2 moles of oxygen atoms and 2 moles of hydrogen atoms are present.

Hence, the number of oxygen atoms in 1 unit of the given compound is 2.

Answer 2

In the compound of barium hydroxide, Ba(OH)2, the 2 is a subscript denoting there are two hydroxide components. Since each contains one oxygen atom, there are a total of two oxygen atoms in the compound.