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Structure of the Atom — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
Which of the following statement is always correct?
  • A
    An atom has equal number of electrons and protons.
  • B
    An atom has equal number of electrons and neutrons
  • C
    An atom has equal number of protons and neutrons.
  • D
    An atom has equal number of electrons protons and neutrons.
✓

Answer

  1. An atom has equal number of electrons and protons.

Explanation:

When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.

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