From the following list of atoms, choose the no. of pairs of isotopes, isobars and isotones respectively \[_{8}^{16}O,\,_{19}^{39}K,\,_{19}^{335}U,\,_{19}^{40}K,\,_{7}^{14}N,\,_{8}^{18}O,\,_{6}^{14}C,\,_{20}^{40}Ca,\,_{92}^{238}U\]

From the following list of atoms, choose the no. of pairs of isotopes,

1.	From the following list of atoms, choose the no. of pairs of isotopes, isobars and isotones respectively \[_{8}^{16}O,\,_{19}^{39}K,\,_{19}^{335}U,\,_{19}^{40}K,\,_{7}^{14}N,\,_{8}^{18}O,\,_{6}^{14}C,\,_{20}^{40}Ca,\,_{92}^{238}U\]
A.	3, 2, 2
B.	2, 3, 2
C.	2, 2, 3
D.	2, 2, 2
Answer» B. 2, 3, 2

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From the following list of atoms, choose the no. of pairs of isotopes, isobars and isotones respectively \[_{8}^{16}O,\,_{19}^{39}K,\,_{19}^{335}U,\,_{19}^{40}K,\,_{7}^{14}N,\,_{8}^{18}O,\,_{6}^{14}C,\,_{20}^{40}Ca,\,_{92}^{238}U\]

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