how many atoms of oxygen in the chemical formula 2ca(clo₂)₂?\n2\n4\n6\n8

Explanation:

Step1: Analyze inner - parentheses oxygen

In the formula $\text{Ca(ClO}_2)_2$, inside the parentheses $\text{ClO}_2$, there are 2 oxygen atoms.

Step2: Consider sub - script outside parentheses

The sub - script 2 outside the parentheses $(\text{ClO}_2)_2$ means we multiply the number of oxygen atoms inside the parentheses by 2. So, the number of oxygen atoms in $\text{Ca(ClO}_2)_2$ is $2\times2 = 4$.

Step3: Account for coefficient in front

The coefficient 2 in front of $\text{Ca(ClO}_2)_2$ means we multiply the total number of oxygen atoms in $\text{Ca(ClO}_2)_2$ by 2. So, the total number of oxygen atoms in $2\text{Ca(ClO}_2)_2$ is $4\times2=8$.

Answer:

8