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Question

Which of the given relations about the above elements are correct.
I) 12C
II) 14C
III) 14N
IV) 16O


A

I and II are isotopes

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B

II and III are isobars

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C

II and IV are isotones

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D

III and IV are isobars

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Solution

The correct options are
A

I and II are isotopes


B

II and III are isobars


C

II and IV are isotones


Nuclei with the same number of protons but a different number of neutrons are called Isotopes.

Nuclei with the same number of neutrons but a different atomic number are called Isotones.

Nuclei with same mass number are called Isobars.

ElementNeutron no.Proton no.Mass no.12C661214C861414N771416O8816

12C and 14C have same Proton number but different Neutron number so they are isotopes

14N and 14C have same mass number so they are isobars.

14C and 16O have same number of neutrons so they are isotones.


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