Question

Automic number is defined as
(A) number of protons
(B) no. of neutrons
(C) number of nucluns
(D) Sum of protons, electrons​

Answer 1

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Atomic number is defined as

A) number of protons

B) no. of neutrons

C) number of nucleus

D) Sum of protons, electrons

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$\huge\color{cyan}\boxed{\colorbox{black}{A) number of protons}}$

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Answer 2

Answer:

(a) number of protons

Explanation:

The atomic number is the number of protons in the nucleus of an atom.