Why can alkali and alkaline earth metals not be obtained by chemical reduction methods?

1. They are a strong reducing agent

2. They are a strong oxidizing agent

3. Their compounds are nonreactive in nature.

4. None of these

 

 

The incorrect statement among the following is -

Quick lime is heated with silica to give:

1. CaSiO₃

2. CaSiO₄

3. CaSiO

4. Ca(SiO)₃

The correct statement(s) among the following options is/are:

The correct statement(s) among the following options is/are:

Match the following:

Sodium hydroxide can be prepared by:

1. Down's Process.

2. Castner–Kellner process.

3. Solvay's Process.

4. None of the above.

The correct order of hydration enthalpies of alkali metal ions is -

1. $L{i}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>N{a}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>K^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>R{b}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>C{s}^{+}$

2. $N{a}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>L{i}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>K^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>R{b}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>C{s}^{+}$

3. $L{i}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>N{a}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>K^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>C{s}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>R{b}^{+}$

4. $N{a}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>L{i}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>K^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>C{s}^{+}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>R{b}^{+}$

Among the following alkaline earth metal halides, the one which is covalent and soluble in organic solvents is:

1. Magnesium chloride

2. Beryllium chloride

3. Calcium chloride

4. Strontium chloride

The structures of beryllium chloride in solid-state, and vapor state are :

1. Dimer, and Linear, respectively.

2. Chain in both.

3. Chain, and dimer, respectively.

4. Linear in both.