Sodium chloride gives a golden yellow flame i | vedclass

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(A) When sodium salts are heated in a Bunsen burner flame,the valence electrons of the sodium atoms absorb energy from the flame and get excited to hi

Vedclass · Accepted Answer

Low ionization energy of sodium

Vedclass · Answer

(A) When sodium salts are heated in a Bunsen burner flame,the valence electrons of the sodium atoms absorb energy from the flame and get excited to higher energy levels.Since these excited states are unstable,the electrons return to their ground state by emitting the absorbed energy in the form of light.For sodium,this emitted light corresponds to the yellow region of the visible spectrum (wavelength $\approx 589 \ nm$ and $589.6 \ nm$).This phenomenon is primarily due to the low ionization energy of sodium,which allows its valence electrons to be easily excited by the thermal energy of the flame.

Sodium chloride gives a golden yellow flame in a Bunsen burner. What can be inferred from this?

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