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Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistrySome Basic Concepts of Chemistry1 Mark
MCQ
Which of the following subatomic particle is lightest?
  • A
    Neutron
  • B
    Alpha particle
  • C
    Electron
  • D
    Deuterium
✓

Answer

  1. Electron

Explanation:

Alpha particle has highest mass of the given option which is he rest mass of the alpha particle amounts to 6.64424×10−27kg.

Mass of neutron is 1.0086654 a.m.u.

Mass of electrons = 9.10938291 × 10−31 kilograms

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