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Subjects
Science CBSE
Class 9
Structure of the atom
Discovery and structural models of atomic particles
7.
Atoms and subatomic particles
Exercise condition:
3
m.
1
.
The smaller particles found in the atom is called
atomic particles
alpha particles
beta particles
subatomic particles
.
2
.
Atom
Mixture
Molecule
Valency
is defined as the combining capacity of an element.
3
.
The element with no neutron in its nucleus is called
helium
oxygen
hydrogen
lithium
.
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