Question

how many o atoms are in zn(clo₃)₂?
a. 2
b. 3
c. 1
d. 6

Explanation:

Step1: Analyze the sub - script inside the parentheses

The formula is $Zn(ClO_3)_2$. Inside the parentheses, the sub - script of oxygen is 3, which means there are 3 oxygen atoms in one $ClO_3$ group.

Step2: Consider the outer sub - script

The outer sub - script 2 indicates that there are 2 $ClO_3$ groups.

Step3: Calculate the total number of oxygen atoms

To find the total number of oxygen atoms, we multiply the number of oxygen atoms in one $ClO_3$ group (3) by the number of $ClO_3$ groups (2). So, $3\times2 = 6$.

Answer:

D. 6