Question

an iodine atom has 53 protons. how many electrons does an iodine anion have?
a at least 54
b 53 or more
c 53 or less
d none of the above

Explanation:

Step1: Recall atom - ion concept

In a neutral atom, number of protons = number of electrons. An iodine atom has 53 protons and 53 electrons when neutral.

Step2: Understand anion formation

An anion is a negatively - charged ion formed by gaining electrons. So an iodine anion has more than 53 electrons.

Answer:

A. at least 54