First slide

Periodicity in atomic properties

Question

In which of the following pair size of I element is higher than II element ?

Moderate

A

Sc, Zn
B

Sc, La
C

Cu, Ag
D

Hf, La

Solution

$Sc > Zn in size because in d -block element moving L ⟶ {RZ}_{eff} ↑ ∴ size ↓$

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