Ho > N > Eu > Ce

Ce > Eu > Ho > N

N > Ce > Eu > Ho

Eu > Ce > Ho > N

C$$\ell $$O$$_3^ - $$ and C$$\ell $$O$$_2^ - $$

C$$\ell $$^$$-$$ and C$$\ell $$O^$$-$$

C$$\ell $$^$$-$$ and C$$\ell $$O$$_2^ - $$

C$$\ell $$^$$-$$ and C$$\ell $$O$$_3^ - $$

Lyophilic sol can be coagulated by adding an electrote

Tyndall effect can be used to distinguish between a colloidal solution and a true solution

It is possible to cause artificial rain by throwing electrified sand carrying charge opposite to the one on clouds from an aeroplane

Latex is a colloidal solution of rubber particles which are positively charged

CN^$$-$$

ethylenediamine

NCS^–

CO