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Which of the following is a metalloid?

  • A.Antimony
  • B.Aluminium
  • C.Magnesium
  • D.Phosphorus
  • E.Calcium

Answer: A

The metalloid is antimony.

Metalloids lie along the boundary between metals and non-metals in the p-block and show intermediate properties. The usual list is boron, silicon, germanium, arsenic, antimony and tellurium.

Aluminium, magnesium and calcium are metals, and phosphorus is a non-metal.

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