Question

list two anmalous pairs in mendeleev's periodic table.

Answer 1

argon-potassium. cobalt-nickel

Answer 2

List of two anmalous pairs in mendeleev's periodic table are-

1. Argon Ar ( Atomic Weight = 39.94) and Potassium K( Atomic Weight = 39.1) : Cobalt Co ( Atomic Weight =58.93 ) and Nickel Ni( Atomic Weight = 58.71 )

2. Tellurium Te (Atomic Weight = 127.60) and Iodine I (Atomic weight = 126.90 )