Q. Atomic number is the number of

A
Neutrons
B
Protons and neutrons
C
Valence electrons
D
Protons
Solution:
  • The atomic number represents or stands for the distinct identity of a chemical element.
  • It is usually defined as the number or protons present in an atom of an element, which is also equal to the number of electrons.
  • Mass number=Number of protons?? of nuetrons
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