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Science CBSE Homework Assignments
Class 9
Structure of the atom
Subatomic particles
1.
Discovery of subatomic particles
Question:
3
m.
1
.
The discovery of the proton is made by
Niels Bohr
James Chadwick
J. J. Thomson
Eugen Goldstein
2
.
All atoms have neutrons, except for
helium
hydrogen
lithium
None of these
3
.
Proton has the charge of
\(0\)
\(-1\)
\(+1\)
\(+2\)
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