Question

question 10 of 10
how many zn atoms are in zn(clo₃)₂?

a. 1

b. 6

c. 3

d. 2

Explanation:

Step1: Analyze the chemical formula

In the chemical formula $\ce{Zn(ClO_{3})_{2}}$, we look at the subscripts. The subscript for an element (if not present) is 1. For Zn, there is no subscript written next to it, which means the number of Zn atoms is determined by the implicit subscript of 1 (unless a coefficient or subscript modifies it). The parentheses and the subscript 2 apply to the $\ce{ClO_{3}}$ group, not to Zn.

Step2: Determine the number of Zn atoms

Since there is no subscript modifying Zn and the default subscript for an element in a formula (when not part of a group with a subscript) is 1, the number of Zn atoms in $\ce{Zn(ClO_{3})_{2}}$ is 1.

Answer:

A. 1