EASY
JEE Main/Advance
IMPORTANT
Earn 100

Explain by giving reason.
(a) Transition metals and many of their compounds show paramagnetic behaviour.
(b) The enthalpies of atomisation of the transition metals are high.
(c) The transition metals generally form coloured compounds.
(a) Transition metals and many of their compounds show paramagnetic behaviour.
(b) The enthalpies of atomisation of the transition metals are high.
(c) The transition metals generally form coloured compounds.

Important Questions on The d- and f-Block Elements
EASY
JEE Main/Advance
IMPORTANT
Why is stored in dark bottle and what happens to it's acidic solution?

EASY
JEE Main/Advance
IMPORTANT
Why does produce a black stain on the skin?

EASY
JEE Main/Advance
IMPORTANT
Why it is not advisable to dissolve in cold and concentrated ?

MEDIUM
JEE Main/Advance
IMPORTANT
What happens when :
(a) Green vitriol is strongly heated.
(b) Malachite is made to react with dilute
(c) Copper sulphate is exposed to air for longer period.
(d) Lunar caustic is made to react with sodium hydroxide and then product is dried.
(e) Silver nitrate reacts with excess iodine.
(f) Potassium dichromate reacts with cold and concentrated

MEDIUM
JEE Main/Advance
IMPORTANT
Write balanced chemical equations for:
(i) Mixture of and is heated with concentrated .
(ii) Potassium permanganate is added to a hot solution of manganous sulphate.
(iii) Potassium dichromate and concentrated are heated together.

EASY
JEE Main/Advance
IMPORTANT
What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements:

EASY
JEE Main/Advance
IMPORTANT
Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

MEDIUM
JEE Main/Advance
IMPORTANT
The chemistry of the actinoid elements is not so smooth as that of the lanthanoids. Justify this statement by giving some examples from the oxidation state of these elements.
