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प्रश्न
Match the properties with the elements of 3d series:
| (i) | lowest enthalpy of atomisation | (p) | Sc |
| (ii) | shows maximum number of oxidation states | (q) | Mn |
| (iii) | transition metal that does not form coloured compounds |
(r) | Zn |
| (s) | Ti |
विकल्प
(i) (r), (ii) (q), (iii) (p)
(i) (r), (ii) (s), (iii) (p)
(i) (p), (ii) (q), (iii) (r)
(i) (s), (ii) (r), (iii) (p)
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उत्तर
(i) (r), (ii) (q), (iii) (p)
Explanation:
Zinc has no unpaired electrons in 3d or 4s orbitals, so enthalpy of atomization is low.
Mn = 3d54s2 shows +2, +3, +4, +5, +6 and +7 oxidation states, maximum number in 3d series.
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संबंधित प्रश्न
Write down the electronic configuration of Cr3+.
Write the different oxidation states of manganese.
Out of Cr3+ and Mn3+, which is a stronger oxidising agent and why?
Which among the following elements does not belong to the first transition series?
Which among the following is not considered as a part of transition elements?
The electronic configuration of \[\ce{Cu(II)}\] is 3d9 whereas that of \[\ce{Cu(I)}\] is 3d10. Which of the following is correct?
Explain the observation, at the end of each period, there is a slight increase in the atomic radius of d-block elements.
Name the element of 3d series which exhibits the largest number of oxidation states. Give reason.
Give reason for the following statements:
Scandium (Z = 21) is a transition element but Zn (Z = 30) is not.
Assertion (A) : Copper is a non-transition element.
Reason (R) : Copper has completely filled d-orbitals in its ground state.
