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24 November, 06:35

The energy of colored light increases in the order red, yellow, green, blue, violet. List the metallic elements used in the flame tests in increasing order of the energy of the light emitted

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  1. 24 November, 06:44
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    Flame test:

    The metals ions can be detected through the flame test. Different ions gives different colors when heated on flame. Tom perform the flame test following steps should follow:

    1. Dip a wire loop in the solution of compound which is going to be tested.

    2. After dipping put the loop of wire on bunsen burner flame.

    3. Observe the color of flame.

    4. Record the flame color produce by compound

    Color produce by metals:

    Red = Lithium, zirconium, strontium, mercury, Rubidium (red violet)

    Orange-red = calcium

    Yellow = sodium, iron (brownish yellow)

    Green = green

    Blue = cesium. arsenic, copper, tantalum, indium, lead

    Violet = potassium (lilac)
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