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Q.

Consider the following species:
a) $_{6} C^{14}$ and $_{8} O^{16}$
b) Atoms of an element having different number of neutrons
c) ${}_{19}^{40}K a n d {}_{20}^{40}C a$
d) ${}_{38}^{90}S r a n d {}_{38}^{88}S r$
Which of the above represent isotopes?

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a

a,d

b

b,d

c

b,c

d

a,c

answer is D.

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Detailed Solution

Isotopes are the atoms of an elements which have same atomic number. They will have different number of neutrons

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Consider the following species:a) 6C14 and 8O16 b) Atoms of an element having different number of neutronsc) K 1940 and C 2040ad) S 3890r and S 3888rWhich of the above represent isotopes?