Question

I don’t really get this Pls pls help!! urgent!!

Answer 1

`Mn(CH_(3) CO_(2) )_(2)` is the first one

`Au_(2) O` is the second one

Step-by-step explanation:

The roman numeral indicates the charge on the cation (the positively charged ion in the ionic compound, almost always a metal). So manganese (II) acetate tells us there will be a charge of 2+ on the Mg. Gold (I) oxide has a charge of 1+ on the Au.

When a ionic compound is formed, the total charge of the compound (the sum of the postive and negative charges) must equal zero.

Acetate is a polyatomic ion with a charge of 1-. This means there will need to be two of them to balance out the charge on the manganese.

Oxygen, when ionized, has a charge of 2-. This means there will need to be two gold atoms to balance out the negative charges.