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2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
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 $_6{C^{12}}$
  • A
    Will remain approximately the same
  • B
    Will become approximately two times
  • C
    Will remain approximately half
  • ✓
    Will be reduced by $25\%$
✓

Answer

Correct option: D.
Will be reduced by $25\%$
d
(d) 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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