Which of the following statements regarding copper salts is not true?
Copper $(I)$ disproportionates to copper and copper $(II)$ ion in aqueous solution
Copper $(I)$ can be stablised by the formation of insoluble complex compounds such as $CuCl_2^-$ and $Cu(CN)_2^-$
Copper $(II)$ oxide is red powder
None of these
The ionic radius of $Cr$ is minimum is which of the following compounds
The transition element that has lowest enthalpy of atomisation is
Steel differs from pig iron and wrought iron in that it contains
Why the transition elements are hard and have high melting and boiling points?
Assertion : Magnetic moment values of actinides are lesser than the theoretically predicted values.
Reason : Actinide elements are strongly paramagnetic.