Atomic number (Z) is equal to _______________.

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

Number of electrons in the outermost shell

Number of protons in the nucleus of an atom.

Number of shells in an atom

Number of neutrons in the nucleus of an atom.

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The atomic number (Z) is equal to the number of protons in the nucleus or the number of electrons in an electrically neutral atom of atom.
Atoms of different elements have different atomic numbers.
Atomic number = Number of protons
Example - In a sodium atom(Na), there are 11 electrons and 11 protons. Thus the atomic number of Na atom = number of electrons = number of protons = 11.

Watch 3-min video & get full concept clarity