Question

zinc has a charge of +2, and oxygen has a charge of -2. which is the chemical formula for zinc oxide?
o zno
o zn₂o
o ozn
o ozn₂

Explanation:

Step1: Determine the ratio of ions

The charge of zinc ($Zn^{2 + }$) is $+ 2$ and the charge of oxygen ($O^{2 - }$) is $- 2$. To form a neutral compound, the ratio of $Zn^{2 + }$ to $O^{2 - }$ is $1:1$ because $(+2)+(-2)=0$.

Step2: Write the chemical formula

In chemical formulas, the metal (zinc in this case) is written first. So the chemical formula is $ZnO$.

Answer:

A. $ZnO$