Exams › NEET › Chemistry

Metallic lustre exhibited by sodium is due to:

1. diffusion of sodium ion
2. oscillation of loose electron
3. escalation of free protons
4. existence of lattice structure

Correct answer: oscillation of loose electron

Solution

Sodium shows metallic lustre because its loosely held valence electrons are free to oscillate when light falls on the surface. These oscillating electrons reflect much of the incident light, producing the shiny appearance.

Related NEET Chemistry questions

• Among the following organic acids, the acid present in rancid butter is:
• A ketone has molar mass \( 86 . \) Which of the following cannot be IUPAC name of this ketone?
• An ideal gas is compressed in a closed container its U?
• Which of the following will change the value of the equilibrium constant for the reaction? \( N_{2}(g)+O_{2}(g) \leftrightharpoons 2 N O(g) \)
• Electronic configuration \( [\boldsymbol{K} \boldsymbol{r}] \boldsymbol{4} \boldsymbol{d}^{10} \) belongs to:
• Internal resistance of a battery cell increases with:

⚔️ Practice NEET Chemistry free + battle 1v1 →