d-Block and f-B...

The relative composition of lanthanides in mischmetal is

Transition metals with lowest melting point is

Which of the following pairs has comparable values of atomic radii as well as ionization energies?

Which among the following transition metal has lowest melting point?

A metal halide, on reaction with potassium dichromate in the presence of conc. H₂SO₄, gives red vapours of a gas. The halide ion and the gas evolved respectively are

Which among the following is not considered as a part of transition elements?

Which of the following give the highest possible oxidation state of a transition element?

Though Zn (125 pm) has a higher atomic radius than Cu (117 pm), yet it has a higher value of first ionization energy because

Which two lanthanoids are added as light filters to glass filter goggles?

Transition elements form coordination complexes because of

Which of the following oxides is amphoteric?

Transition elements can form alloys with other elements due to

Which of the following statements is true about nickel and titanium ions in their +2 oxidation states?

The number of water of crystallization in hydrated copper sulphate is

Which of the following is not a property of transition elements?

Mercurous ion is

The chromium atoms in both Cr₂O₇^2- and CrO₄^2- are sp³ hybridised. All the Cr-O bonds are equivalent in

K₂Cr₂O₇ reacts with NH₄Cl in the presence of H₂SO₄. The product formed is

Transition metals with highest melting point is

The element that can reduce steam to hydrogen is

Which is the most stable oxidation state of iron?

Scandium in the 3d series has the lowest density because

ZnSO₄ (aq) is colourless, but CuSO₄ (aq) is coloured because

Which of the following elements of the 3d series respectively have the highest and lowest melting points?

Lanthanoids are soft metals with a silvery white sheen. The exception to this fact is