Question

What is the name of \[MgB{r_2}\]?
A. Manganese bromate
B. Manganese bromide
C. Magnesium bromate
D. Magnesium bromide
E. Magnesium dibromide

Answer 1

Hint: Most cation and anion combined to form ionic compounds. Most of the time they are referred to as salt. The net charge of that compound should be zero. That is why the number of cations and anion must be balanced to make an electrically neutral compound.

Complete step by step answer:
To name these ionic compounds the following rule must be followed.
1. The name of the cation remains as same as its element name
2. The anion name is also similar to its element name but the end of the name should be removed and replaced with “-ide”.
3. If any metallic element can show different charges or different oxidation states, then that oxidation state has to be mentioned in the Roman letter after the name of the cation.
Therefore, according to the rules, the name \[MgB{r_2}\] is Magnesium bromide.

So, the correct option is D.

Note:
Basically, ionic compounds are the chemical compounds combined with ionic bonds, in these compounds the cationic part consists of metal, and the anionic part consists of a nonmetal or polyatomic ion. Ionic compounds high melting and boiling point. They are hard and brittle.