The yellow colour in NaCl crystals is due to

Question

The yellow colour in NaCl crystals is due to (A) excitation of electrons in F-centres (B) reflection of light from Cl- ions on the surface (C) refraction of light from Na+ ions (D) all of the above

Tardigrade Admin · Accepted Answer

The yellow colour is due to metal excess defect of anionic valency. Na +ion deposited on the surface of crystal of NaCl. The Cl -ion diffused to form NaCl. This happens by loss of electron from Na to Na +at F centres.

Q. The yellow colour in $N a Cl$ crystals is due to

excitation of electrons in F-centres

reflection of light from $C l^{-}$ ions on the surface

refraction of light from $N a^{+}$ ions

all of the above

The yellow colour is due to metal excess defect of anionic valency. $N a^{+}$ ion deposited on the surface of crystal of $N a Cl$ . The $C l^{-}$ ion diffused to form $N a Cl$ . This happens by loss of electron from $N a$ to $N a^{+}$ at $F$ centres.

Q. The yellow colour in NaCl crystals is due to

excitation of electrons in F-centres

reflection of light from Cl− ions on the surface

refraction of light from Na+ ions

all of the above

The yellow colour is due to metal excess defect of anionic valency. Na+ion deposited on the surface of crystal of NaCl. The Cl−ion diffused to form NaCl. This happens by loss of electron from Na to Na+at F centres.

Q. The yellow colour in $N a Cl$ crystals is due to

reflection of light from $C l^{-}$ ions on the surface

refraction of light from $N a^{+}$ ions

The yellow colour is due to metal excess defect of anionic valency. $N a^{+}$ ion deposited on the surface of crystal of $N a Cl$ . The $C l^{-}$ ion diffused to form $N a Cl$ . This happens by loss of electron from $N a$ to $N a^{+}$ at $F$ centres.