Question

what is atomic no element​

Answer 1

dude I can't understand the question.

I think so mate u r asking "what is atom?".

It is the smallest particle that can exist.And it is the fundamental piece of matter.

Answer 2

the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).