Question

$AgCl$ and $NaCl$ are colourless $NaBr$ and $NaI$ are also colourless but $AgBr$ and $Agl$ are coloured. This is due to

• A. $Ag^{+}$ has half-filled $d$-orbital
• B. $Ag^{+}$ polarises $Br^{-}$ and $I^{-}$
• C. $Ag^{+}$ depolarises $Br^{-}$ and $I^{-}$
• D. None is correct

Answer 1

Answer: (B)

$AgCl, NaCl, NaBr, NaI$ less polarization, more ionic, colourless $AgBr, AgI$ more polarization, less ionic, more covalent, coloured