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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
$Ca$ has atomic no. $20 $ and atomic weight $40.$  Which of the following statements is not correct about $Ca$ atom
  • A
    The number of electrons is same as the number of neutrons
  • B
    The number of nucleons is double of the number of electrons
  • ✓
    The number of protons is half of the number of neutrons
  • D
    The number of nucleons is double of the atomic number
✓

Answer

Correct option: C.
The number of protons is half of the number of neutrons
c
(c) $_{20}C{a^{40}}$ has $20$  proton, $20 $ neutron.

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