a
1 proton only
b
1 proton, 2 neutron
c
1 neutron only
d
1 electron only
Explanation
Correct Option
aVideo Explanation
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Discussions (11)

KennyBrain10
1 year ago
The question said "Nucleus" so u can't find electron in the nucleus for those saying D...
Since Hydrogen nucleus has "1" it is proton but if "2" then there'll be proton and neutron present




