What is meant by sub-atomic particle ? Give brief information of 3 sub-atomic particles with reference to electric charge ,mass & location.

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Solution

Dear student,

An atom is divided into smaller particles called as subatomic particles.
The sub-atomic particles are electron, proton and neutron.

Electron

Proton

Neutron

(i)

Electrons are present outside the nucleus of an atom.

(i)

Protons are present in the nucleus of an atom.

(i)

Neutrons are present in the nucleus of an atom.

(ii)

Electrons are negatively charged.

(ii)

Protons are positively charged.

(ii)

Neutrons are neutral.

(iii)

The mass of an electron is considered to negligible.

(iii)

The mass of a proton is approximately 2000 times as the mass of an electron.

(iii)

The mass of neutron is nearly equal to the mass of a proton.

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Electron		Proton		Neutron
(i)	Electrons are present outside the nucleus of an atom.	(i)	Protons are present in the nucleus of an atom.	(i)	Neutrons are present in the nucleus of an atom.
(ii)	Electrons are negatively charged.	(ii)	Protons are positively charged.	(ii)	Neutrons are neutral.
(iii)	The mass of an electron is considered to negligible.	(iii)	The mass of a proton is approximately 2000 times as the mass of an electron.	(iii)	The mass of neutron is nearly equal to the mass of a proton.