Assertion: Magnesium does not impact characteristic colour to the bunsen-burner flame.
Reason: Ionisation energy of Mg is very high.

Assertion: Magnesium does not impart characteristic colour to the bunsen-burner flame. Reason: Ionisation energy of Mg is very high.

Does Mg impart characteristic colour to the flame?

Assertion : Beryllium does not impart any characteristic colour to the Bunsen flame. Reason : Due to its very high ionization energy, Be requires a large amounts of energy for excitation of the electrons.

Assertion : Berylium does not impart any characteristic colour to the Bunsen flame. Reason : Due to its very high ionization energy, beryllium requires a large amount of energy for excitation of the electrons.

Why does alkali metals impart characteristic colour to the flame?

Assertion: Be and Mg do not impat characteristic colour to the flame. Reason: both Be and Mg have high ionization energy.

Assertion: Be and Mg do not impat characteristic colour to the flame. Reason: both Be and Mg have high ionization energy.

Why do alkali metals impart characteristic colour to the flame of bunsen burner?

Assertion (A): Magnesium does not impart any characteristic colour to the flame. Reason (R ): Due to small size and high effective nuclear charge, magnesium requires a large amount of energy for excitation of electrons.