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
Complete the following chemical equations:
`(i) Cr_2O_7^(2-)+6Fe^(2+)+14H^+ ->`
`(ii) 2CrO_4^(2-)+2H^+ ->`
`(iii) 2MnO_4^-+5C_2O_4^(2-)+16H^+ ->`
Why is the highest oxidation state of a metal exhibited in its oxide or fluoride only?
Why does the density of transition elements increase from Titanium to Copper? (at. no. Ti = 22, Cu = 29)
The paramagnetic character in the 3d-transition series elements increases up to Mn and then decreases.
How is potassium dichromate prepared from chrome iron ore?
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of \[\ce{Cr^{3+}}\] ion is ______.
Highest oxidation state of manganese in fluoride is \[\ce{+4 (MnF4)}\] but highest oxidation state in oxides is \[\ce{+7 (Mn2O7)}\] because ______.
Why EΘ values for Mn, Ni and Zn are more negative than expected?
The orientation of an atomic orbital is governed by
Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:
Atomic sizes
