Question

What is nucleus?and what are it's properties?

Answer 1

It is the most important part of the cell. It lies in the centre of the cell, but it may also occupy peripheral positions. It controls all the activities of the cell.

Answer 2

The central core of an atom which contains all the atoms positive charge and most of its mass is known as an atomic nucleus. These protons and neutrons of an atom are collectively called nucleons of that atom.
Properties of an atom:
1.It is consists of protons.
2.Except hydrogen no atom is stable without neutrons.