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The radii (metallic) of Fe,CO and Ni are...

The radii (metallic) of `Fe,CO and Ni` are nearly same.
This is due to:

A

lanthanide contraction

B

decrease in radii due to increase in effective nuclear charge is compensated by incease in radii due to increase in screening effect

C

decrease in radii due to increasing screeing effect is compensated by increase in size due to increasing effective nuclear charge

D

atomic radii do not remain constant but decrease in a normal gradation

Text Solution

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The correct Answer is:
B
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NARAYNA-D BLOCK & TRANSITION ELEMENTS-Level-I
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  2. Which of the following pair of elements have same radii?

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  3. The radii (metallic) of Fe,CO and Ni are nearly same. This is due to...

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  4. Which of the following ion is coloured in its aqueous solution?

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  5. Transition metals are coloured due to the following electronic transit...

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  6. In which pair, both ions are coloured in aqueous medium

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  7. MnO(4)^(-) is intense pint colour, though Mn is (+7) oxidation state, ...

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  8. VO(4)^(-), CrO(4)^(2-) and MnO(4)^(-)are pale yellow, strong yellow an...

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  9. Which is not true statement?

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  11. Name the catalyst and promoter in the Haber's process for the manufact...

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  12. In a transition series, as the atomic number increases, paramagnetism

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  13. Paramagnetism is not exhibited by

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  14. The magnetic moment of the complex [Ti(H(2)O)(6)]^(3+) is

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  15. The ratio of magnetic moment of Fe(III) and Co(II) is :

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  16. The ion having maximum magnetic moment is

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