Question

if mass of proton is increased by 25% and mass of electron and neutron is decreased by 50% then calculate new mass number of oxygen​

Answer 1

Answer:

14g atom

Explanation:

25% of 8 protons

8×1/4 = 2g atom

Then increase in mass due to 25% increase in mass of proton = 8+2 = 10g atom

50% of 8 neutrons

8×1/2 = 4g atom

Then decrease in mass due to 50% decrease in mass of neutron = 8-4 = 4g atom

There is no effect of electrons on mass of atom as their mass is negligible.

Therefore,

New mass = 10+4 = 14g atom

hope this will help you