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Column (I) Column (II)
(p) Eka-Aluminium (i) Germanium
(q) Eka-Silicon (ii) Unknown elements at the time of Mendeleev
(r) Tellurium-Iodine (iii) Gallium
(s) Ga, Ge (iv) Anomalous pair
p q r s
1 iii i iv ii
2 i iii ii iv
3 iii i ii iv
4 i iii iv ii

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Detailed Solution

Eka- Aluminium known as Gallium

Eka-Silicon known as Germanium

Te, I₂ are known as anomalous pairs

Ga and Ge were not discovered at the time of Mendeleev's classification.

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