Question

How many neutrons are there in a single $F{{e}^{2+}}$ atom?

Answer 1

Hint: An atom is made up of a nucleus where nucleus consist of proton and neutron where proton are positively charged ions and neutrons carries no charge i.e. they are neutral in nature and electrons which are negatively charged ions are revolving around the nucleus.

Complete step by step answer:
- To calculate the number of neutrons we have to know about the term atomic number and mass number. Atomic numbers can be represented as the number of protons present in any element; it is also known by the name proton number and it is generally represented by the letter Z. Mass number can be defined as the total number of neutrons and protons present in the nucleus where protons and neutrons together are known as nucleons and this is represented by the symbol A as this mass number is also known by the name atomic mass number.
- Neutron is neutral in nature represented by the symbol n. Fe is the symbol for iron and we know that the atomic number of Fe is 26 and Mass number of iron is 56. Neutron is generally calculated by subtracting mass number from atomic number so it can be calculated as:
Number of neutrons = 56 – 26 = 30.
Thus there are 30 neutrons in a single $F{{e}^{2+}}$ atom.

Note: Neutron is generally a subatomic particle which is neutral in charge. Mass of the neutron is slightly greater than the mass of the proton. Protons and neutrons together form the term nucleon as they both exist together in the nucleus.