Argon has atomic number of 18 and mass number of 40. Calcium has atomic 20 and mass number 40. Calcium and argon are examples of

isochores

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isobars

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isotopes

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isotones

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Solution

The correct option is B
isobars

Atoms of different elements with different atomic numbers and the same mass number are known as isobars.

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Similar questions

20

18

40

(C a)

20

40

C a

An ion $X^{2 +}$ contains 18 electrons and 20 neutrons. Calculate the atomic number and mass no. of element X. Name the element X.

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