Physical Properties of Group 2 Elements

Given below are two statements: One is labelled as Assertion $\mathrm{A}$ and the other is labelled as Reason $\mathrm{R}$:

Assertion (A) : ${\mathrm{BeCl}}_2$ and ${\mathrm{MgCl}}_2$ produce characteristic flame

Reason (R) : The excitation energy is high in ${\mathrm{BeCl}}_2$ and ${\mathrm{MgCl}}_2$

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

Ion having highest hydration enthalpy among the given alkaline earth metal ions is:

Which of the following has highest hydration energy?

Find incorrect order

Which of the following element has the highest enthalpy of sublimation?

Halides of $\mathrm{Be}$ dissolve in organic solvent while of $\mathrm{Ba}$ do not

Compared with the alkaline earth metals, the alkali metals show

Alkaline earth metals form hydrated crystalline solids such as ${\mathrm{MgCl}}_2·8{\mathrm{H}}_2\mathrm{O}$ and ${\mathrm{CaCl}}_2·6{\mathrm{H}}_2\mathrm{O}.$ This is due to

Find the incorrect order

Which one of the following chlorides has maximum tendency to form hydrate?

Which of the following alkaline earth metal does not impart any colour to flame?

Why does magnesium form ${\mathrm{Mg}}^{2+}$ and not ${\mathrm{Mg}}^{+}?$

Identify the metal with highest melting point.

Identify the Group-$2$ element which has the highest sublimation enthalpy.

Highest melting point among the following is displayed by

The thermal stability of ${\mathrm{BaCO}}_3, {\mathrm{CaCO}}_3, {\mathrm{SrCO}}_3$ and ${\mathrm{MgCO}}_3$ decreases in the order:

The melting and boiling points of these metals are higher than the corresponding alkali metals due to

Which has the highest boiling point among the alkaline earth metal ?

$\mathrm{Be}$ has _______, as compared to $\mathrm{Mg}$:

The correct order of density is