Physical Properties of Group 1 and 2 Elements

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic.
Reasons R: The deep blue solution is due to the formation of amide.

In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements: One is labelled as
Assertion $\mathbf{A}$ and the other is labelled as Reason $\mathbf{R}$
Assertion $\mathbf{A}$: Sodium is about $30$ times as abundant as potassium in the oceans.
Reason $\mathbf{R}$: Potassium is bigger in size than sodium.
In the light of the above statements, choose the correct answer from the options given below

The density of alkali metals is in the order

Alkali metal from the following with least melting point is

The standard electrode potential of ${\mathrm{M}}^{+}/\mathrm{M}$ in aqueous solution does not depend on

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : The energy required to form ${\mathrm{Mg}}^{2+}$from $\mathrm{Mg}$ is much higher than that required to produce ${\mathrm{Mg}}^{+}$

Reason R:${\mathrm{Mg}}^{2+}$ is small ion and carry more charge than ${\mathrm{Mg}}^{+}$

In the light of the above statements, choose the correct answer from the options given below.

Density of Group-$1$ metals follow the order:

Which alkali metal has the lowest melting point?

The increasing order of metallic character is given as :

Which of the following elements is more reactive from the given?

Find incorrect order

The increasing order of ${\mathrm{E}}_{\left({\mathrm{M}}^{+}/\mathrm{M}\right)}^0$ values of alkali metals is

In which of the following the size difference is maximum?

Name two colourless metal ions.

Discuss the trend of electronegativity in alkaline earth metals.

The first ionisation enthalpies of the alkaline earth metals are higher than that of alkali metals but second ionisation enthalpies are smaller than alkali metals.

The first ionisation enthalpies of the alkaline earth metals are higher than that of alkali metals but second ionisation enthalpies are smaller, why?

Discuss the reducing potential of the alkaline earth metals.

Why do magnesium has the highest density than calcium?

Which is the largest alkaline earth metal ion?