flame test

Question

Characteristic violet flame indicates presence of:

RankGuru · Accepted Answer

1. **Principle**: When metal salts are heated in a Bunsen flame, electrons are excited and then release energy as visible light upon returning to the ground state.
2. **Observations**:
   - **Potassium ($K^+$)**: Imparts a pale **violet (lilac)** flame coloration.
   - **Sodium ($Na^+$)**: Shows a persistent golden **yellow** flame.
   - **Calcium ($Ca^{2+}$)**: Gives a **brick red** flame.
   - **Barium ($Ba^{2+}$)**: Produces an **apple green** flame.
3. **Diagnosis**: Violet coloration specifically confirms the presence of Potassium.

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flame test

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More flame test Practice Questions

Brick-red flame is given by: