Q7 / 90 · JEE Main 2012 (19 May Online) · Chemistry

Which pair of elements with the given atomic numbers is expected to have similar properties?

Correct answer
A
40,72
B
20,36
C
10,28
D
11,12

Solution

$\mathrm{Zr}(40), \mathrm{Hf}(72)$ have similar properties as they belong to same group and have same valence shell electronic configuration.

Hence, the correct answer is option: 'A'.

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