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321

Q:

Which of the following metals having atomic number 3 is a soft, silvery metal with very low density that reacts vigorously with water and corrodes quickly in the air?

  • 1
    Potassium
  • 2
    Sodium
  • 3
    Lithium
  • 4
    Rubidium
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Answer : 3. "Lithium"

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