Beryllium and magnesium do not give colo...

Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?

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Verified by Experts

Be and Mg atoms are smaller and their electrons being strongly bound to the nucleous are not excited to higher energy level.
Therefore they do not give colour in the flame test.

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Give the correct order of thermal stabiiity of alkaline earth metal carbonates.

`BaCO_3gtSrCO_3gtCaCO_3gtMgCO_3gtBeCO_3`

`SrCO_3gtCaCO_3gtBaCO_3gtBeCO_3gtMgCO_3`

`BeCO_3gtBaCO_3gtMgCO_3gtSrCO_3gtCaCO_3`

`CaCO_3gtMgCO_3gtSrCO_3gtBaCO_3gtBeCO_3`

Match the flame colours of the alkali and alkaline earth metal salts in the bunsen burner

p - 2, q - 1, r - 4, s - 5, t - 6, u - 3

p - 1, q - 2, r - 4, s - 5, t - 6, u - 3

p - 4, q - 1, r - 2, s - 3, t - 5, u - 6

p - 6, q - 5, r - 4, s - 3, t - 1, u - 2

Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?

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Give the correct order of thermal stabiiity of alkaline earth metal carbonates.

Match the flame colours of the alkali and alkaline earth metal salts in the bunsen burner

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