Advertisements
Advertisements
प्रश्न
What are the transition elements? Write two characteristics of the transition elements.
Advertisements
उत्तर
Elements that possess incompletely filled d-orbitals either in their ground state or in any of their oxidation states are known as transition elements. The name ‘transition’ given to the elements of d-block is only because of their position between s-block and p-block elements.
Characteristics of transition elements are as follows:-
- They show paramagnetic behaviour.
- They show variable oxidation states.
- They exhibit catalytic properties.
- They generally form complex compounds.
- They generally form coloured compounds.
Disclaimer: Any two of the above-mentioned characteristics can be mentioned in the answer.
APPEARS IN
संबंधित प्रश्न
Account for the following:
Cr2+ is a strong reducing agent.
How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.
How would you account for the following:
Of the d4 species, Cr2+ is strongly reducing while manganese (III) is strongly oxidising.
EΘ of Cu is + 0.34V while that of Zn is – 0.76V. Explain.
Answer the following question:
Which element of the first transition series has lowest enthalpy of atomisation?
Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds.
Catalytic hydrogenation of benzene gives
The spin magnetic moment of cobalt in the compound Hg [Co(SCN)4] is:-
Which of the following species has maximum magnetic momentum?
Explain the magnetic properties of d-block (or transition) elements.
