Classification Of Elements And Periodicity In Properties Question 213
Question: The atomic radius of elements of which of the following series would be nearly the same [MP PET 1997]
Options:
A) $ Na $ ,$ K $, $ Rb $, $ Cs $
B) $ Li $ ,$ Be $, $ B $ ,$ C $
C) $ Fe $ ,$ Co $, $ Ni $ ,$ Cu $
D) $ F $, $ Cl $ ,$ Br $, $ I $
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Answer:
Correct Answer: C
Solution:
$ Fe,Co,Ni,Cu $ . Due to shielding of d-electrons, the effect of increased nuclear charge due to increase in atomic no. neutralised. Consequently atomic radius remains almost unchanged after chromium.
BETA
