Question

Some statements are given below
which is/are correct
(A) when Mendeleev P.T, 63
elements were known
(B) 3rd group of Mendeleev's
P.T consists of maximum
number of elements
(C) Zero group was unknown
when Mendeleev P.T
(D) Every group of modern
Mandeleev' s periodic table
consisted two sub groups A
and B​

Answer 1

Answer:

Aaaaaaaaaa is the right answer

Explanation:

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Answer 2

Answer:

Aand D

Explanation:

When mendeleév s periodic table was created ,then there were only 63 elements .