Q. In the laboratory, sodium chloride is made by burning the sodium in the atmosphere of chlorine which is yellow in colour. The cause of yellow colour is
A) Presence of electrons in the crystal lattice
B) Presence of $Na^{+}$ ions in the crystal lattice
C) Presence of $CI^{-}$ ions in the crystal lattice
D) Presence of face centred cubic crystal lattice
Explanation
(a)
Yellow colour on heating $NaCl$ in presence of Na is due to presence of electrons in anion vacancies (F-centres)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.