Explain the trend in atomic radii on moving down a group, with reference to the alkali metals in Group 1 [IA].

The atomic radii ............ on moving down a group.

Why are group 1 elements called alkali metals ?

On moving down the group 13 density

What is the trend in the atomic size in a group, does it increase or decrease?

The atomic radius increases as we move down a group because

Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture: A)In alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group B)The reactivity decreases in the alkali metals but increases in the halogens with increases in atomic number down the group. C)In both the alkali metals and the halogen the chemical reactivity decreases with increases in atomic number down the group D)Chemical reactivity increases with increases in atomic number down the group in both the alkali metals and halogens.

Describe the trend of atomic size along a period and a group in the periodic table.

Explain the trend in general of ionisation potential of elements on moving down a group. Give reasons for the change in the periodic trend in each case.

The increasing order of atomic radii of the following group 13 elements is

The increasing order of atomic radii of the following group 13 elements is