If an atom is represented as \( _{11}^{23}X \), which of the following deduction is correct?

  • A it contains 12 protons
  • B it forms a covalent chloride
  • C its atomic number is 23
  • D it is an alkali metal

The correct answer is D. it is an alkali metal

Sodium has atomic / proton number of 11 and belongs to Group 1[alkali metals] on the periodic table

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