Question

write down the formula of sodium sulphate using Criss cross method

Answer 1

Answer:

Formula of sodium sulfate is Na2SO4. It is an ionic compound and consists of 2 sodium ions and 1 sulfate ion. Sodium is a cation while sulfate is an anion. Sodium has +1 charge and sulfate has -2 charge on it.

According to criss cross rule:

                               

                                      Na      SO4

                                      +1         -2

Now according to the rule exchange their charges. After cross over charges 2 will be assigned to Na and 1 will be assigned to SO4.

The final product will be Na2SO4.

Answer 2

Answer:

                                     Na      SO4

                                     +1         -2

Explanation: