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Chemistry CBSE Live product
Class 9
Structure of the atom
Atomic structure: Rutherford and Bohr Models
2.
Rutherford experiment & its limitations
Question:
3
m.
State
True or False with suitable reason:
1.
The positive centre of the atom is known as the nucleus
True
False
Reason:
A few alpha particles were deflected backward, showing positive charge is concentrated in a tiny central region.
A few alpha particles were deflected backward, showing negative charge is concentrated in a tiny central region.
2.
If an atom would no longer be stable, matter would no longer exist in the way we know it.
False
True
Reason:
Atoms would become larger, making matter take up more space.
Atoms are the basic building blocks of matter; if they became unstable, matter would lose its structure.
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