Question

what is atomic number

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Answer 1

Answer:

the number of protons that a chemical element has in its centre (nucleus)

किसी रसायनिक तत्व के नाभि (केंद्र) में स्‍थित, घनात्‍मक विद्युत आवेश वाले प्रोटोनों की संख्‍या; परमाणु संख्‍या

Answer 2

The atomic number or proton number of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus.

The number of electrons is also same as the atomic number.

Hope this helps you.