Question

6 the formula for lithium carbonate is

Explanation:

Step1: Determine the ions

Lithium ion is \( \text{Li}^+ \) (lithium has a +1 charge as it's in Group 1 of the periodic table). Carbonate ion is \( \text{CO}_3^{2-} \) (carbonate has a -2 charge).

Step2: Balance the charges

To balance the charges, we need 2 lithium ions (each with +1) to balance the -2 charge of one carbonate ion. So the ratio of \( \text{Li}^+ \) to \( \text{CO}_3^{2-} \) is 2:1.

Step3: Write the formula

Using the criss - cross method (the magnitude of the charge of one ion becomes the subscript of the other ion), we get the formula \( \text{Li}_2\text{CO}_3 \).

Answer:

\( \text{Li}_2\text{CO}_3 \)