An element ‘X’ has a valency 3(+):

- Write the formula of its phosphide.
- Write the formula of its carbonate.

**Answer:**

- XP
- X2 (C03)3

An element ‘X’ has a valency 3(+):

- Write the formula of its phosphide.
- Write the formula of its carbonate.

**Answer:**

- XP
- X2 (C03)3