The correct formula for sodium chlorate(V) is NaClO₃, not NaClO₂. Sodium chlorate(V) is a chemical compound composed of one sodium (Na) atom, one chlorine (Cl) atom, and three oxygen (O) atoms.
To calculate the relative formula mass of sodium chlorate(V), you add the atomic masses of its constituent elements:
- Sodium (Na) has an atomic mass of approximately 22.99.
- Chlorine (Cl) has an atomic mass of about 35.45.
- Oxygen (O) has an atomic mass of around 16.00.
Since there are three oxygen atoms in sodium chlorate(V), you multiply the atomic mass of oxygen by 3.
Relative formula mass of NaClO₃:
= (1 x Na) + (1 x Cl) + (3 x O)
= (1 x 22.99) + (1 x 35.45) + (3 x 16.00)
= 22.99 + 35.45 + 48.00
= 106.44
So, the relative formula mass of sodium chlorate(V) (NaClO₃) is 106.44 atomic mass units (amu).