In the laboratory , sodium choride is made by burning the sodium in the atmosphere of cholrine which is yellow in colour .The cause of yellow colour is

Options

A. Presence of `Na^(+)` ions in the crystal lattice
B. Presence of `Cl^(-)` ions in the crystal lattice
C. Presence of electron in the crystal lattice
D. Presence of face centered cubic crystal lattice

Answer

c

Explanation

Yellow colour on heating `NaCI` in the presence of Na is due to presence of electron in ation vacancies (f-centres).