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Why do beryllium and magnesium not impart colour to the flame in the flame test?

0 7 Views | Posted 5 months ago
Asked by Shiksha User

  • 1 Answer

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    Answered by

    Payal Gupta | Contributor-Level 10

    5 months ago

    This is a short answer type question as classified in NCERT Exemplar

    The flame is due to the excitation of the electron from its higher energy state to the lower energy states. Due to the small atomic and ionic size of beryllium and magnesium, electrons are tightly bound to the atom. The electrons of Be and Mg does not gain excitation from the energy provided by the flame. Hence they do not show any flame in the flame test.

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