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2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
The atomic number of an element is always equal to
  • A
    Atomic weight divided by $2$
  • B
    Number of neutrons in the nucleus
  • C
    Weight of the nucleus
  • ✓
    Electrical charge of the nucleus
✓

Answer

Correct option: D.
Electrical charge of the nucleus
d
Atomic number $=$ number of protons.

Each proton has unit positive charge and hence, electrical charge of the nucleus is equal to the atomic number of the element.

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