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Structure of Atom — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryStructure of Atom1 Mark
MCQ
Two atoms are said to be isobars if:
  • A
    They have same atomic number but different mass number.
  • B
    They have same number of electrons but different number of neutrons.
  • C
    They have same number of neutrons but different number of electrons.
  • D
    Sum of the number of protons and neutrons is same but the number of protons is different.
✓

Answer

  1. Sum of the number of protons and neutrons is same but the number of protons is different.

Explanation:

Isobars have different atomic number, i.e., number of protons but same mass number, i.e., sum of number of protons and neutrons.

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