Select the properties which increases regularly with increase in atomic number in atomic number in first group elements of modern periodic table

Options

A. Metalic character
B. Number of electrons in valence shell
C. Reducing power
D. Atomic size

Answer

A, D

Explanation

(A) Order of metallic character `: Li lt Na, Klt Rb lt Cs`
(B) Each element of the group has `ns^(1)` configuration and `1e^(-)` in its valance shell.
(C ) Order of reducing power `Na lt K lt Rb lt Cs lt Li`
(D) Order of size : `Li lt Na lt K lt Rb lt Cs`