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Q.

Which of the following is Mendeleev’s anomalous pair?

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a

Na, Mg

b

Cu, Zn

c

Cr, Mn

d

Te, I

answer is C.

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Detailed Solution

Te, I pair is Mendeleev’s anomalous pair because their masses to be against  for increasing order of atomic weights. First element having more atomic weight than second element.
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