The atomic radius increases as we move down a group because

Assertion: Cu, Ag and Au lie in Group 11 of the periodic table. Hence their atomic radii are in the order CultAgltAu Reason: In any group iof the transition elements, the atomic radii increase as we move down the group.

Assertion: Cu, Ag and Au lie in Group 11 of the periodic table. Hence their atomic radii are in the order Cu ltAgltAu Reason: In any group iof the transition elements, the atomic radii increase as we move down the group.

Metallic nature increases moving down the group because:

Justify the following statements: a) Cations are smaller in size than the corresponding atom. b) Size of the atom increases as we move down a group. c) Atomic size decreases as we move across a period.

Give reasons - K atom is bigger than Na atom even though both these elements belong to same group. The metallic character of elements increases as we move down a group. Mg atom is smaller than Na even though these elements belong to same period.

a) How does electropositivity of elements get affected as we move: (i) down a group (ii) across a period? b] Which atomic property increases as we move across a period and down a group?