Q37 of 70 Page 111

Out of Cu2Cl2 and CuCl2, which is more stable and why?

CuCl2 is more stable because Cu2+ has a higher electron density than Cu+. Cu2+ is smaller in size, has higher effective nuclear charge and therefore a higher hydration enthalpy ∆hyd of Cu2+, which makes it more stable.


More from this chapter

All 70 →
35

Transition elements show high melting points. Why?

 36

When Cu2+ ion is treated with KI, a white precipitate is formed. Explain the reaction with the help of chemical equation.

 38

When a brown compound of manganese (A) is treated with HCl it gives a gas (B). The gas taken in excess, reacts with NH3 to give an explosive compound (C). Identify compounds A, B and C.

 39

Although fluorine is more electronegative than oxygen, but the ability of oxygen to stabilise higher oxidation states exceeds that of fluorine. Why?