Question

3
2
3
c)
3
2
Column - I
A) Periodic property
B) Decrease of attraction of valence electrons
C) Atomic number
B. C
Column - II
1) Effective nuclear charge
2) Electronegativity, Atomic radii
3) Modem periodic law
A B
3​

Answer 1

Answer:

Column-I

C)Atomic number

Column-II

3)Modem periodic law.

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