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Question

Which of the following elements is a metalloid?

A
Lithium
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B
Beryllium
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C
Boron
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D
Carbon
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Solution

Explanation:

  • The electronic configuration of boron is 1s22s22s1.
  • It can either donate or accept electrons to get the stable configuration.
  • Boron can act as both metal and non metal.
  • Hence, it is a metalloid.

Hence, option (D) is correct.


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