The metallic lustre exhibited by sodium is explained by [IIT 1987] – McqOptions

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1.	The metallic lustre exhibited by sodium is explained by [IIT 1987]
A.	Diffusion of sodium ions
B.	Oscillation of loose electrons
C.	Excitation of free protons
D.	Existence of body centred cubic lattice
Answer» C. Excitation of free protons

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