Question
Why do alkali metals have low ionisation enthalpy?

Answer

It is due to largest atomic size, they can lose electrons easily.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Tell the orbitals related to following quantum numbers :
$
n = 5 \quad l= 3
$
Why does boron trifluoride behave as Lewis acid?
Find out Lewis acid and base from following :$
H_2 O, BCl_3, FeCl_3, C_2 H_5 OH, PCl_5 .
$
$\mathrm{CH}_4(\mathrm{~g})+2 \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})+2 \mathrm{H}_2 \mathrm{O}(\mathrm{I})$ ; $\Delta\text{H}=-890\text{kJ mol}^{-1}$
What is the calorific or fuel value of 1kg of $\mathrm{CH}_4$?
Represent a galvanic cell in electrode and ions containing Cu electrode dipped in molar solution of copper sulphate and silver electrode dipped in molar solution of silver nitrate.
$\Big[\text{Given E}^\circ_{\frac{\text{Cu}^{2+}}{\text{Cu(s)}}}=0.34\text{V, E}^\circ_{\frac{\text{Ag}^+}{\text{Ag(s)}}}=0.80\text{V}\Big]$
Explain the physical significance of van der Waal's parameters.
What is Kc for the following equilibrium when the equilibrium concentration of each substance is:
${\left[\mathrm{SO}_2\right]=0.60 \mathrm{M},\left[\mathrm{O}_2\right]=0.82 \mathrm{M} \text { and }\left[\mathrm{SO}_3\right]=1.90 \mathrm{M} ?}$
$2 \mathrm{SO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \rightleftharpoons 2 \mathrm{SO}_{3(\mathrm{~g})}$
Give an example of disproportionation reaction.
Dinitrogen and dihydrogen react with each other to produce ammonia according to the following chemical equation:
$\mathrm{N}_{2(\mathrm{~g})}+\mathrm{H}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{NH}_{3(\mathrm{~g})}$
If yes, which one and what would be its mass?
Which ions are important for blood clotting?