MolSynapsequestion bank

MolSynapse / Question bank / Chemical Bonding / Fajans rules and ionic character

JEE Main levelSingle correct optionDifficulty 2 of 3cb177

The correct order of increasing covalent character of the chlorides is

A $KCl < LiCl < NaCl < BeCl X_{2}$
B $BeCl X_{2} < LiCl < NaCl < KCl$
C $NaCl < KCl < LiCl < BeCl X_{2}$
D $KCl < NaCl < LiCl < BeCl X_{2}$

Answer: D

The anion is the same, so polarising power of the cation decides. It increases as size decreases and charge increases:

K X^{+} < Na X^{+} < Li X^{+} < Be X^{2 +}

. The covalent character of the chlorides follows the same order.

Practice Chemical Bonding More on Fajans rules and ionic character

Previous questionNext question

More questions on Fajans rules and ionic character

Among the lithium halides, the most covalent one is NEET level
CuCl is more covalent than NaCl although Cu+ and Na+ have similar sizes and the same charge. The reason is that NEET level
Which of the following hydrogen bonds is the strongest? NEET level
NaCl dissolves readily in water but AgCl does not. The main reason is that JEE Main level
Which of the following chlorides has the lowest melting point? JEE Main level
The correct order of increasing covalent character of silver halides is JEE Main level