The transition metal ions responsible for col | vedclass

Name: PDF Generator App | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

A ruby is a crystal of alumina, aluminum oxide $(Al_2O_3)$ containing a trace of chromium $(III)$ ions replacing some of the aluminum ions. In ruby, e

Vedclass · Accepted Answer

$Cr^{3+}$ and $Cr^{3+}$

Vedclass · Answer

A ruby is a crystal of alumina, aluminum oxide $(Al_2O_3)$ containing a trace of chromium $(III)$ ions replacing some of the aluminum ions. In ruby, each $Al^{3+}$ ion and $Cr^{3+}$ ion is surrounded by six oxide ions in an octahedral arrangement. The origin of the color of emeralds is similar to that of the color of rubies. However, the bulk of an emerald crystal is composed of beryl, beryllium aluminum silicate $(Be_3 Al_2(SiO_3)_6)$ instead of the alumina which forms rubies. The color is produced by chromium $(III)$ ions, which replace some of the aluminum ions in the crystal. In emeralds, the $Cr^{3+}$ is surrounded by six silicate ions, rather than the six oxide ions in ruby. Therefore, the color (green) of emeralds is different from that of ruby

The transition metal ions responsible for colour in ruby and emerald are, respectively

Similar Questions

$Zn$ and $Cd$ metals do not show variable valency because

Which metal is present in brass, bronze and German silver

The spin only magnetic moment of $\left[ ZCl _{4}\right]^{2-}$ is $3.87 \,BM,$ where $Z$ is $.....$

Which one of the following metals will not reduce ${H_2}O$

Consider the hydrated ions of $Ti^{2+}, V^{2+}, Ti^{3+}$ and $Sc^{3+}$. The correct order of their spin-only magnetic moments is