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Alkali metals and their salts impart cha...

Alkali metals and their salts impart characteristic colours to an oxidizing flame. Explain the reason.

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Alkali metals and their salts impart characteristic colours to an oxidizing flame.
Reasons:
The heat from the flame excites the outer most orbital electron to a higher energy level. When the excited emitts the radiation and comes back to the ground state. This falls in the visible region.
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Knowledge Check

  • The metal which imparts Brick red colour to flame is

    A
    `Be`
    B
    `Mg`
    C
    `Ca`
    D
    `Ba`

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