Question
Question: In Mendleev's periodic table some pairs of elements do not follow increasing order of atomic weight ...
In Mendleev's periodic table some pairs of elements do not follow increasing order of atomic weight known as anomolous pair. The correct example of anomolous pair is -
A
Cl, Ar
B
Th, Pa
C
Te, In
D
Co, Nb
Answer
Th, Pa
Explanation
Solution
Atomic weight of Th = 232
Atomic weight of Pa = 231