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MHT CET202618 April 2026Evening ShiftChemistrys Block ElementsActual

What is the general formula of halide salts of alkali metals if M is a metal atom ?

Options

  1. AMX
  2. BMX ₂
  3. CM ₃ X ₂
  4. DM ₂ X ₃

Correct answer

A. MX

Step-by-step solution

Alkali metals belong to Group 1 of the periodic table and have one valence electron. They lose this electron to form a unipositive ion, M⁺ . Halogens belong to Group 17 and have seven valence electrons. They gain one electron to form a uninegative ion, X⁻ . To form a neutral salt, one M⁺ ion combines with one X⁻ ion. The general formula of halide salts of alkali metals is MX . Answer: MX

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