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Q.

It is known that atom contain protons, neutrons and electrons. If the mass of neutron is assumed to half of its original value whereas that of proton is assumed to be twice of its original value then the atomic mass of 614C will be :

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a

same

b

14.28% less

c

14.28% more

d

28.56% less

answer is C.

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Detailed Solution

No. of protons in 6C14 = 6;No. of neutrons in 6C14 = 8;As per given new atomic mass of 6C14 = 12 + 4 = 16(As the mass of e is negligible as compared to neutron and proton) % increase in mass =16−1414×100=14.28

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It is known that atom contain protons, neutrons and electrons. If the mass of neutron is assumed to half of its original value whereas that of proton is assumed to be twice of its original value then the atomic mass of 614C will be :