Question

1. magnesium nitride is a compound made up of a. 2 elements and 5 atoms b. 3 elements and 5 atoms c. 2 elements and 4 atoms d. 3 elements and 4 atoms 2. metal and non - metal ions react to produce the ionic compounds albr3(s) and mgcl2(s). which of the following rows identifies the ratio of metal atoms to non - metal atoms for each compound? row a b c d albr3(s) 1:3 3:1 2:1 1:2 mgcl2(s) 1:2 2:1 3:1 1:3

Explanation:

Step1: Analyze AlBr₃

In AlBr₃, Al (aluminum) is a metal and Br (bromine) is a non - metal. The formula indicates that there is 1 aluminum atom and 3 bromine atoms. So the ratio of metal atoms to non - metal atoms is 1:3.

Step2: Analyze MgCl₂

In MgCl₂, Mg (magnesium) is a metal and Cl (chlorine) is a non - metal. The formula shows that there is 1 magnesium atom and 2 chlorine atoms. So the ratio of metal atoms to non - metal atoms is 1:2.

Answer:

A. 1:3 for AlBr₃ and 1:2 for MgCl₂