Question

Enter the formula for the compound cobalt(II) phosphate. Express your answer as a chemical formula.

Answer 1

Answer:

$Co_3(PO_4)_2$

Explanation:

Naming of the ionic compounds:-

• The name of the cation is written first and the the name of the anion is written after the name of the cation separated by single space.
• The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
• In case of transition metals, the oxidation state are written in roman numerals in bracket in front of positive ions.

Hence, given ionic compound:-

Cobalt(II) phosphate

So, Cobalt will have a positive charge of +2

Phosphate is $PO_4^{3-}$

So, the formula is :-

Co         $PO_4^{3-}$

2                    3

$Co_3(PO_4)_2$