Question

What do the following symbols formulae stand for : (a) 2O (b) O2 (c) O3 (d) H2O

Answer 1

1. 2 free atoms of oxygen.
2. 1 molecule of oxygen containing 2 atoms.
3. 1 molecule of ozone containing 3 atoms of oxygen.
4. 1 molecule of water containing 2 atoms of hydrogen and 1 atom of oxygen.

Answer 2

Answer:

Explanation:

1. 2 free atoms of oxygen.

2. 1 molecule of oxygen containing 2 atoms.

3. 1 molecule of ozone containing 3 atoms of oxygen.

4. 1 molecule of water containing 2 atoms of hydrogen and 1 atom of oxygen.