Let mass of electron is half, mass of proton is two times and mass of neutron is three fourth of original. Then find out new atomic wt. of O16 atom

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Increases by 37.5%

Remain constant

Increases by 12.5%

Decreases by 25%

answer is A.

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Detailed Solution

Mass of electron is negligibleO16 contains protons = 8 neutrons = 8 Proton mass doubled and neutron mass become 34th mass number = 8×2 +8×34=22Increase in % = 22-1616×100=37.5

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