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प्रश्न
Explain the observation, at the end of each period, there is a slight increase in the atomic radius of d-block elements.
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उत्तर
The d-orbital is full with ten electrons and shields the electrons present in the higher s-orbital to a greater extent resulting in an increase in size.
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संबंधित प्रश्न
Explain giving reasons:
Transition metals and many of their compounds show paramagnetic behaviour.
Write down the electronic configuration of Cr3+.
Write down the electronic configuration of Lu2+.
Write down the electronic configuration of Th4+.
Write the different oxidation states of manganese.
Account for the following:
Mn2+ is more stable than Fe2+ towards oxidation to +3 state.
Electronic configuration of manganese (Z = 25) is ______
Name the element of 3d series which exhibits the largest number of oxidation states. Give reason.
Define transition metals.
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 |
