Question

answer me. solve 13 number..
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Answer 1

Explanation:

Maas no.= no.of protons + no.of neutrons

Mass no.of x = 6 + 6 = 12

Mass no.of y = 6+ 8 = 14

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Atomic no.= no.of protons ,

Atomic no.of x = 6

aatomic no.of y = 6

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Those species which have some atomic no.but different mass no. → isotopes .

As atomic no.is 6 have the element is Carbon