Is phosphorus anion smaller or larger than a phosphorus atom.

the anion is larger

Explanation:

An anion is a negatively charged particle. Means it has more electrons than it generally wants. This goes to say that it'll have more electrons than a normal phosphorus atom

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.