Seema Saini Solutions for Chapter: s-Block Group 1 (Alkali Metals), Exercise 1: DPP

The pair(s) of reagents that yield paramagnetic species is/are:

Which of the following are the correct reasons for anomalous behaviour of lithium?

Which of the following statements are correct?

Sesquioxide, ${\mathrm{K}}_2{\mathrm{O}}_3$ is prepared by careful thermal decomposition of ${\mathrm{KO}}_2. {\mathrm{K}}_2{\mathrm{O}}_3$ contains:

The properties of lithium and beryllium, and their compounds, differ far from those of the group $1$ and the group $2$ elements, and compounds may show closer similarities with group $2$ elements (particularly $\mathrm{Mg}$), than they show towards their own group. Similarly, $\mathrm{Be}$ is also closer to $\mathrm{Al}$.

What type of salt is formed by $\mathrm{Li}$ only,  in the group.

The properties of lithium and beryllium and their compounds differ far from those of the group $1$ and the group $2$ elements, and compounds may show closer similarities with the group $2$ elements (particularly $\mathrm{Mg}$), than they show towards their own group. Similarly, $\mathrm{Be}$ is also closer to $\mathrm{Al}$.

The properties of lithium and beryllium and their compounds differ far from those of the group $1$ and group $2$ elements and compound may show closer similarities with group- $2$ elements (particularly $\mathrm{Mg}$ ) then they show towards their own group. Similarly, $\mathrm{Be}$ is also closer to $\mathrm{Al}$.

The properties of lithium and beryllium and their compounds differ far from those of the group $1$ and group $2$ elements and compound may show closer similarities with group- $2$ elements (particularly $\mathrm{Mg}$ ) then they show towards their own group. Similarly, $\mathrm{Be}$ is also closer to $\mathrm{Al}$.

Which of the following metals react directly with carbon?

$\begin{array}{llll}\text{ (I) }\mathrm{Li}& \text{ (II) }\mathrm{Na}& \text{ (III) }\mathrm{Mg}& \text{ (IV) }\mathrm{Ca}\end{array}$