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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
Which statement about atom is incorrect?
  • A
    Atoms are invisible
  • ✓
    All atoms have same number of protons and electrons
  • C
    Atoms are made up of subatomic particles
  • D
    It has mass
✓

Answer

Correct option: B.
All atoms have same number of protons and electrons
Atoms are smallest particle of an element.
They consists of solid mass in the center known as the nucleus in which protons and neutrons are present.
Outside the nucleus, there are present electrons which keep up on revolving around it.
Thus the atom is not mostly the empty space.

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