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-p-Block elements - I — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Element showing the phenomenon of allotropy is
  • A
    Aluminium
  • ✓
    Tin
  • C
    Lead
  • D
    Copper
✓

Answer

Correct option: B.
Tin
b
Among the given elements tin ( $Sn$ ) shows the allotropy.

$\beta$-tin (the metallic form, or white tin), which is stable at and above room temperature, is malleable. In contrast, $\alpha$-tin (nonmetallic form, or gray tin), which is stable below $13.2^{\circ} C \left(55.8^{\circ} F \right)$, is brittle.

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