The correct statement(s) are:

CHEMISTRY · Multi correct · CBSE · Chemistry · d- and f-Block Elements · d- and f-Block Elements

Problem

The correct statement(s) are: (1) Zirconium (Zr) and hafnium (Hf) have almost the same size. (2) The correct order of ionisation energy of coinage metals is Cu>Ag<Au\text{Cu} > \text{Ag} < \text{Au}. (3) The carbon atom in CCl4\text{CCl}_4 is more electronegative than the carbon atom in CF4\text{CF}_4. (4) Pb2+\text{Pb}^{2+} is more stable than Pb4+\text{Pb}^{4+}.

Related theory

Browse the problem library