MCQ
The set representing the correct order of ionic radius is
- A$Na^+ > Mg^{2+} > Al^{3+} > Li^+ > Be^{2+}$
- ✓$Na^+ > Li^+ > Mg^{2+} > Al^{3+} > Be^{2+}$
- C$Na^+ > Mg^{2+} > Li^+ > Al^{3+} > Be^{2+}$
- D$Na^+ > Mg^{2+} > Li^+ > Be^{2+}$
In a period, on moving from left to right, the ionic radius decreases. Hence, $N a^{+}>M g^{2+}>A l^{3+}$ and $L i^{+}>B e^{2+}$
In a group, on moving down from top to bottom, the ionic radius increases. Hence, $N a^{+}>L i^{+}$ and $M g^{2+}>B e^{2+}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$\Delta H_{f({C_2}{H_2})(g)}^o\, = \,230\,kJ\,mo{l^{ - 1}}$
$\Delta H_{f({C_6}{H_6})(g)}^o\, = \,85\,kJ\,mo{l^{ - 1}}$
Calculate the standard heat of trimerisation of ethyne to benzene.
$3{C_2}{H_2}(g) \to {C_6}{H_6}(g)$
......$kJ\, mol^{-1}$