What is the correct chemical formula for sodium sulfate?

Answer 1

Sulfate consists of 1 S, and 4 O and so has a charge of 2-. You can see this directly from the Periodic Table by checking what group these atoms are in. Sulfur and Oxygen are both in the 6th group, meaning they both have 6 valence electrons. So (6 electrons * 5 atoms) = 30 electrons. If we follow the octet rule (each atom must have 8 valence electrons for a full octet), then we need 2 more electrons. Sodium, Na, is in the 1st group on the periodic table, and therefore has 1 valence electron. So we need 2 sodium atoms, giving us the formula:

Na2SO4

That is,

2 Na

1 S

4 O

It's important to remember that when atoms 'share' their electrons by bonding, that BOTH atoms 'see' the electrons as theirs, meaning that, for example, although you may have 14 electrons between 2 atoms, as long as there is a single bond between the atoms they will both have full octets.

For example: O2

:::O:O:::

where : = pair of electrons.

Answer 2

The correct chemical formula for sodium sulfate is Na2SO4. It is composed of two sodium atoms (Na), one sulfur atom (S), and four oxygen atoms (O).

Answer 3

The chemical formula of sodium sulfate is Na2SO4.

Answer 4

Na2SO4
the chemical formula for sodium sulfate is:

Na2SO4

Answer 5

The chemical formula of sodium sulfide is Na2S.

Answer 6

The chemical formula of sodium sulphate is Na2SO4.

Answer 7

Na2S.

Answer 8

Na2SO4

Answer 9

NaHSO4

Answer 10

Na2So4