1.

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 \[N{{a}^{+}}\]ions in the crystal lattice
B.                 Presence of \[C{{l}^{-}}\]ions in the crystal lattice
C.                 Presence of electron in the crystal lattice
D.                 Presence of face centered cubic crystal lattice
Answer» D.                 Presence of face centered cubic crystal lattice


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