EASY
9th ICSE
IMPORTANT
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The size of an atom is decided by the number of .

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Important Questions on Atomic Structure and Chemical Bonding

EASY
9th ICSE
IMPORTANT
Neutron has mass roughly equal to _____.
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9th ICSE
IMPORTANT
Almost all the mass of an atom is concentrated in a small region, called _____.
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9th ICSE
IMPORTANT
Rutherford's a-particle scattering experiment was responsible for the discovery of _____.
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9th ICSE
IMPORTANT
According to Bohr's model, an atom has discrete _____ levels.
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9th ICSE
IMPORTANT
_____  is an element with atomic number three.
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9th ICSE
IMPORTANT
First energy level can have maximum _____ electrons.(number)
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9th ICSE
IMPORTANT
Electronic configuration of neon atom is _____(Example : Electronic configuration of carbon= 2, 4).
EASY
9th ICSE
IMPORTANT
Maximum number of electrons occupied by L-shell is _____(number).