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What is allotropy ? Mention about the al...

What is allotropy ? Mention about the allotropic forms of Pb, Ge , Si.

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Allotropy : The existence of the same element in two or more forms in the same physical state but having different properties is called allotropy. The different forms are called allotropes.
Pb: `to` No allotrope exists.
Ge : `to` Two ( Both are crystalline forms )
Si : `to` Two ( Both are crystalline forms )
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Knowledge Check

  • The crystalline allotropic forms of carbon are

    A
    Diamond and graphite
    B
    Diamond and charcoal
    C
    Graphite and lamp black
    D
    Bone charcoal and fullerenes

  • Grey, white and rhombic are allotropic forms of

    A
    Carbon
    B
    Silicon
    C
    Germanium
    D
    Tin.

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