Q.
An element has protons whose mass is equal to 3674 times that of an electron. Identify the element
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a
H
b
He
c
Be
d
C
answer is A.
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Detailed Solution
The mass of a proton is 1837-times that of an electron
No. of protons = 3674/1837 = 2
Atomic number = 2
So the element is Helium.
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