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प्रश्न
What are the transition elements? Write two characteristics of the transition elements.
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.
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संबंधित प्रश्न
Which metal in the first transition series (3d series) exhibits + 1 oxidation state most frequently and why?
How would you account for the irregular variation of ionization enthalpies (first and second) in the first series of the transition elements?
Give reasons: Sc3+ is colourless in aqueous solution whereas Ti3+ is coloured.
Explain why Zn2+ salts are white whereas Cu2+ salts are coloured.
In lake test for Al3+ ions, there is the formation of coloured ‘floating lake’. It is due to ______.
Highest oxidation state of manganese in fluoride is \[\ce{+4 (MnF4)}\] but highest oxidation state in oxides is \[\ce{+7 (Mn2O7)}\] because ______.
Explain why does colour of \[\ce{KMNO4}\] disappear when oxalic acid is added to its solution in acidic medium.
Which of the following maxm magnetic moment?
Give reasons for the following statement:
Transition metals and most of their compounds show paramagnetic behaviour.
Account for the following:
Copper has an exceptionally positive `"E"_("M"^(2+)//"M")^0` value.
