Q.

An element with Z = 101  belongs to ……group of modern periodic table

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a

11

b

7

c

9

d

3

answer is C.

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Detailed Solution

Hints to predict the position of element in the Modern periodic table :

1)Elements from Z = 58-71……Lanthanoids…..4f series.6th period……3rd(IIIB) group;

2)Elements from Z = 90-103… Actinoids…..   5f series….7th period……3rd(IIIB) group;

Th(Z=90), Pa(Z=91), U(Z=92), Np(Z=93), Pu(Z=94), Am(Z=95), Cm(Z=96) ;

Bk(Z=97), Cf(Z=98), Es(Z=99), Fm(Z=100), Md(Z=101),  No(Z=102), Lr(Z=103) ;

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