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Structure of Atom — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryStructure of Atom1 Mark
MCQ
Atomic number of element ___________ is 19.
  • A
    Mg
  • B
    K
  • C
    Ar
  • D
    Ca
✓

Answer

  1. K

Explanation:

Atomic number of potassium (K) is 19.

Atomic numbers of Mg, Ar and Ca are 12, 18 and 20 respectively.

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