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Asked Sep 21, 2019
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Why do protons always have a positive charge? Is it that they can donate?

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Expert Answer

Step 1

 

An atom can be considered as the smallest unit of any matter. An atom is composed of certain sub-atomic particles whose position, interaction and charges maintain the neutrality of the atom.

These sub-atomic particles are electrons, neutrons and protons.

 

Step 2

Electrons are negatively charged particles which are arranged in certain energy levels in an atom. These particles have negligible mass and carry -1 charge compare to other particles. 

The energy levels in which electrons are placed, called as shell. These sub-atomic particles take part in the chemical reactions of an atom.

Step 3

Neutrons are neutral particles and are placed at the center of atom. The center part of atom is called ...

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