Which of these are pairs of isobar?

Last updated at Dec. 16, 2024 by

Which of these are pairs of isobar?

  1.   6 C 12 , 8 O 16
  2.   6 C 13 , 6 O 14
  3.   20 Ca 40 , 18 Ar 40
  4. None of these

 

Answer

C. 20 Ca 40 , 18 Ar 40

 

 

Explanation: Isobars are atoms of different elements. They have different atomic numbers but same mass numbers.

 

Here, Calcium and Argon are different elements with the same mass numbers and different atomic numbers. Hence they are isobars.

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo