C+ protons and electrons

What is the atomic number of an anion that has 5 neutrons and 4 electrons

The mass number of Fe²⁺ is 56. How many neutrons are there in a single Fe²⁺ atom? 28 30 56 58

An atom that gains an electron and forms an ion with a charge becomes in size.

An ion with a positive electrical charge is considered to be _____.