Single Choice

The atomic radii of the elements are almost same of which series:

A$$ Fe - Co-Ni $$
Correct Answer
B$$ Na-K-Rb $$
C$$ F-Cl-Br $$
D$$ Li -Be-B $$

Solution

The atomic radii of the elements are almost same of Fe -CO -Ni series.

With the increase in the d-electrons screening effect increases, this counter balances the increased nuclear charge due to increase in atomic number. As a result, atomic radii remain practically the same after chromium.

SIMILAR QUESTIONS

d - block and f - block Elements

The atomic radius of $$Ag$$ is closed to :

d - block and f - block Elements

Which of the following does not represent the correct order of the property indicated?

d - block and f - block Elements

Give reason for: $$Zr$$ and $$Hf$$ have almost identical radii.

d - block and f - block Elements

Account for: Silver atom has completely filled $$d$$-orbitals ($$4d^{10}$$) in its ground state yet silver is a transition element.

d - block and f - block Elements

The decreases in atomic volume from Cr to Cu is very negligible because

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