Physical Properties of Group 1 and 2 elements

Why the ionic radii of alkaline earth metals are smaller than the corresponding members of the alkali metals?

Which of the following alkaline earth metal has the largest ionic radii?

Discuss the trend of electronegativity in alkaline earth metals.

Write the variation in ionic radii of the alkaline earth metals.

Explain the variation in ionization energy of alkali metals.

The ionization enthalpy of alkali metals is very low. Give reason?

Discuss the variation of electronegativity, down the group of alkali metals.

Write a short note on the electronegativities of alkali metals.

Which of the following property is not a characteristic of alkali metals?

Which of the following elements has the maximum density?

The name of the alkali metal which gives golden yellow colour in the flame test is _____ (sodium/magnesium).

Which of the following property is not a characteristic of alkali metals?

Which of the following elements has the maximum density?

The atomic and ionic radii of the alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods.

The set representing the correct order of ionic radii is

Name the following: Alkali metal with the smallest atom.

Alkali and alkaline earth metals along with hydrogen and helium constitute s-block elements. They have low ionization enthalpies and hence exhibit characteristic flame coloration. They have highly negative electrode potentials and hence are strong reducing agents. Their solutions in liquid ammonia are conducting and also act as strong reducing agents. Being stronger reducing agents than hydrogen, they are usually prepared by electrolysis of their fused chlorides. Their oxides are basic and the basic strength increases down the group. The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends. The carbonates of alkaline earth metals and lithium carbonate decompose on heating while the carbonates of other alkali metals do not decompose on heating The bicarbonates of both alkali and alkaline earth metals on heating give carbonates.

The element that produces red-violet colour in the non-luminous flame is 

Solubility of carbonates of alkaline earth metals follows the order-

In the given compounds identify the one that is not hygroscopic in nature.

Explain why: Alkali metals impart colour to the flame.