Question

What do you mean by nucleus?

Answer 1

Hint :To answer this question, we first need to understand what an atom is. The smallest unit of ordinary matter that makes up a chemical element is an atom. Atoms that are neutral or ionized make up every solid, liquid, gas, and plasma. Atoms are incredibly small, measuring about 100 picometers in diameter.

Complete Step By Step Answer:
Nucleus – The atomic nucleus is a compact, compact region at the center of an atom made up of protons and neutrons that was discovered in 1911 by Ernest Rutherford based on the Geiger–Marsden gold foil experiment of 1909.
Dmitri Litvinenko and Werner Heisenberg swiftly devised models for a nucleus made up of protons and neutrons after the neutron was discovered in 1932.
A positively charged nucleus is surrounded by a cloud of negatively charged electrons that are held together by electrostatic force. The nucleus contains almost all of an atom's mass, with the electron cloud contributing only a little amount. The nucleus is formed by the binding of protons and neutrons.
The diameter of the nucleus varies between 1.7566 fm (the diameter of a single proton) and 11.7142 fm (the diameter of a single uranium atom). By a factor of around 26,634 (uranium atomic radius is approximately 156 pm to around 60,250), these dimensions are substantially lower than the diameter of the atom itself (nucleus + electron cloud) (hydrogen atomic radius is about 52.92 pm).

Note :
The nucleus (plural: nuclei) is a positively charged area in the atom's core. It is made up of two different types of subatomic particles that are densely packed together. Protons, which have a positive electric charge, and neutrons, which have a neutral electric charge, are the particles.