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The triad not present in Group VIII of M...

The triad not present in Group VIII of Mendeleeff's table

A

Li, Na, K

B

Fe, Co, Ni

C

Ru, Rh, Pd

D

Os,Ir,Pt

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A
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  • PASSAGE - 1: In Mendeleeff's periodic table elements were classified on the basis of atomic weight & in modern periodic table on the atomic number. The lighter elements of 2 & 3 periods show similarities in their properties called diagonal relationship 1. Which of the following element is not present in Mendeleeff's periodic table

    A
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    B
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    C
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    D
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  • Which is true for an element R present in group 13 of the periodic table

    A
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    It forms `R_(2)O_(3)`
    D
    It forms `RX_(2)`

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