Metallic lustre is explained by
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Lustre is the property of a metal surface to reflect light. The lustrous property in metals is termed metallic lustre. The property is based on how the light interacts with the metal surface.
- Diffusion of metal ions
- Oscillation of loose electrons
- Excitation of free protons
- Existence of bcc lattice
The Correct Option is B
Solution and Explanation
Metallic lustre is explained by the oscillation of loose electrons.
The incident light ray falling on the electrons present on the surface of a metal absorbs energy and starts oscillating. These oscillating electrons emit radiations that give metals their metallic lustre. The surface starts to glow and shine. The principle behind the lustrous property can be explained as:
- Metals belong to either s-block or in d-block in the periodic table.
- The valence electrons in metals are present in either the s-orbital or in d-orbital.
- When incident light falls on the metal surface, the electrons absorb the energy of photons and get excited.
- The electrons then start oscillating due to the energy of the photons.
- The oscillating protons lose energy and come back to the ground state.
- They start to emit a certain wavelength of light in all the directions.
Also Read: Metals and Non-Metals
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Concepts Used:
Occurrence of metals
The existence of metals often plays an important role in our survival, even if we are unaware of them. Our reliance on metals has been strong since the old industrial era. From buildings to jewelry, we utilize them for everything. But where do we acquire these metals from and how are they made? Let's read the occurrence of metal in more detail.
Metals are found in the earth's crust, and it seems to be a good place to extract them through various processes such as metallurgy. The process of extracting metals from ores is called metallurgy. Mining is the most common method of extracting metals from the earth.
In nature, metals are mostly found in mixed conditions. However, they can also be found in a free state. In its natural state, a native metal is one that can be found in its pure form or as part of an alloy. Most metals are exposed to natural processes such as oxidation and corrosion. As a result, only non-reactive metals such as gold, silver, platinum, and others are discovered in their native or open-free condition. Most metals are obtained as compounds, which must be filtered to remove contaminants before being employed in numerous applications.