\[_{18}A{{r}^{40}},{{\,}_{20}}C{{a}^{40}}\] and \[_{19}{{K}^{40}}\] are [MNR 1983; DPMT 1991; EAMCET 1992; RPMT 1997; Pb.CET 2000]

\[_{18}A{{r}^{40}},{{\,}_{20}}C{{a}^{40}}\] and \[_{19}{{K}^{40}}\]�

1.	\[_{18}A{{r}^{40}},{{\,}_{20}}C{{a}^{40}}\] and \[_{19}{{K}^{40}}\] are [MNR 1983; DPMT 1991; EAMCET 1992; RPMT 1997; Pb.CET 2000]
A.	Isomers
B.	Isotopes
C.	Isobars
D.	Isotones
Answer» D. Isotones

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\[_{18}A{{r}^{40}},{{\,}_{20}}C{{a}^{40}}\] and \[_{19}{{K}^{40}}\] are [MNR 1983; DPMT 1991; EAMCET 1992; RPMT 1997; Pb.CET 2000]

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