Question

Which subatomic particle is present in the nucleus of an atom?

Answer 1

Atoms are tiny particles and consist of a heavy portion in the center of an atom. This heavy portion is called the nucleus. The nucleus is a positive charge and consists of two types of subatomic particles called neutrons and protons. Outside the nucleus electrons are present and negatively charged subatomic particles.

Complete answer:
Molecules are the combination of atoms and atoms are the tiny particles and it is invisible to the human eye. Atoms consist of three types of subatomic particles called protons, neutrons and electrons.
Atoms consist of a heavy portion of mass at the center of the atom. This heavy portion of mass can be called a nucleus. The nucleus is positively charged and attracts the electrons present in the outermost shells.
As the nucleus consists of positively charged subatomic particles protons, it is positively charged. In addition to the protons, the nucleus consists of zero charged subatomic particles called neutrons. As these are zero charged protons contribute the positive charge to the nucleus.
Outside the nucleus electrons are present and carry negatively charged subatomic particles.
Thus, the nucleus consists of two subatomic particles called neutrons and protons.

Note:
The protons and neutrons are heavier than electrons, and electrons have a very lighter mass compared to protons and neutrons. The magnitude of a charge of an electron and proton are the same. But electrons consist of negatively charged protons and protons consist of positively charged protons.