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Q.

Give the no. of proton and neutron in 92238U


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a

Proton -92 and neutron -146

b

Proton -99 and neutron -146

c

None of the above

d

All of the above 

answer is A.

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Detailed Solution

The no. of proton and neutron in 92238U is given by Proton-92 and neutron -146
Given,
Number of protons = 92
Mass number = 238
we know that,
Mass number=number of protons+number of neutrons
                  238=92+number of neutrons
Number of neutrons=238 – 92 
                              = 146 
 
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