1.

Which among the following is not an anomalous pair in Mendeleev's periodic table?

Answer»

(a) `Co, NI`
(B) `Te, I `
(c) `Ar, K`
(d) `Sc, Ga`

Solution :In case of first three pairs, the ATOMIC weights of LATTER
elements are greater than the FORMER elements,
so, they are called anomalous pairs. The last pair is not an anomalous pair.


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