Question

Why do atoms are electrically in neutral?

Answer 1

Hey mate.
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▪Yes, because atom is defined as electrically neutral entity composed by one nucleus and as many electrons as protons in the nucleus. When occurs an excess or lack of electrons, the correct name of the entity is ion or, more rigorously, monoatomic ion.

Hope it helps !!

Answer 2

because they have equal number of electrons and protons

Because the electrostatic force is quite strong. If atoms were not neutral - that is, the universe carried a net electrical charge - gravity is far too weak to bring matter together into stars and planets against the electrostatic repulsion tthat would result.

But on the other hand, individual atoms need not be neutral; consider sodium chloride, in which all the sodium atoms carry a positive charge and all the chlorine atoms carry a negative charge. The key is that you have equal amounts of positive and negative charge present, and so attractions and repulsions cancel in bulk matter.