Question
Question: **L3**The metallic lustre exhibited by sodium is explained by :...
L3The metallic lustre exhibited by sodium is explained by :
A
Diffusion of sodium ions
B
Oscillation of mobile valence electrons
C
Existence of free protons
D
Existence of body centered cubic lattice
Answer
Oscillation of mobile valence electrons
Explanation
Solution
Alkali metals have one mobile electron per atom, those may undergo oscillation producing metallic lustre.