Q16 / 150 · MHT CET 2025 (22 Apr Shift 1) · Chemistry

Which of the following is not an alkali metal?

  • A
    Lithium
  • B
    Potassium
  • Correct answer
    C
    Beryllium
  • D
    Caesium

Solution

Alkali metals comprise Group 1 elements: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).

Beryllium (Be) belongs to Group 2, classifying it as an alkaline earth metal rather than an alkali metal.

Hence, the correct answer is option: 'C'.

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