Topic: Atomic Structure


Atoms consists of protons, neutrons and electrons. If the mass of neutrons and electrons were made half and two times respectively to their actual masses, then the atomic mass of 6C12

(a) :  Will remain approximately the same
(b) :  Will become approximately two times
(c) :  Will remain approximately half
(d) :  Will be reduced by 25%
Answer:  Will be reduced by 25%

No change by doubling mass of electrons however by reducing
mass of neutron to half total atomic mass becomes 6 + 3
instead of 6+6 . Thus reduced by 25%.

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