Explain the following facts: Transition metals form coloured complexes.
175 Views
Given below are the electrode potential values, E° for some of the first row of transition elements: Elements V(23) Cr(24) Mn(25)Fe(26)Co(27)Ni(28) Cu(29) E°M2+/M(V) –1.18 – 0.91 – 0.44 – 0.28 –0.28 –0.25 +0.34 Explain the irregularities in these values on the basis of electronic structures of atoms.
279 Views
Complete the following reaction equations: (i) Cr2O72 + Sn2+ + H+ → (ii) MnO4– + Fe2+ + H+ →
625 Views
Actinide cations are coloured? Why?
511 Views
Advertisement
Give reasons: Ce4+ is used as an oxidising agent in volumetric analysis.
422 Views
Give reasons: Zn2+ salts are white while Cu2+ salts are blue.
186 Views
Why is cerium a good analytical reagent?
317 Views
Why La, Gd and Lu has low value of 3rd ionisation enthalpies?
301 Views
Advertisement
<
Eu2+, Yb2+ are good reductants whereas Tb+4 is an oxidant. Why?
478 Views
Give reasons: Among transition metals, the highest oxidation state is exhibited in oxoanions of a metal.
