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PASSAGE - 1: In Mendeleeff's periodic ta...

PASSAGE - 1: In Mendeleeff's periodic table elements were classified on the basis of atomic weight & in modern periodic table on the atomic number. The lighter elements of 2 & 3 periods show similarities in their properties called diagonal relationship
The atomic number of element separated from main body of periodic table is

A

64

B

20

C

46

D

57

Text Solution

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The correct Answer is:
A
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