Which of the following can act as Lewis acids?
[i.] \( {CCl}_4 \)
[ii.] \( {GeCl}_4 \)
[iii.] \( {SiF}_4 \)
The mass of particle X is four times the mass of particle Y. The velocity of particle Y is four times the velocity of X. The ratio of de Broglie wavelengths of X and Y is:
A solid is dissolved in 1 L water. The enthalpy of its solution (\(\Delta H_{{sol}}^\circ\)) is 'x' kJ/mol. The hydration enthalpy (\(\Delta H_{{hyd}}^\circ\)) for the same reaction is 'y' kJ/mol. What is lattice enthalpy (\(\Delta H_{{lattice}}^\circ\)) of the solid in kJ/mol?
Arrange the following in increasing order of their pK\(_b\) values. 