Name: Oxidation States of Actinoids
Uploaded: 2019-07-19
Duration: 7 min 39 s
Description: The elements in the actinoid group are found to exhibit a large number of oxidation states. This property has contributed to making their chemistry more comp...

Question

Why is

{Cu}_{2} I_{2}

colourless? Calculate the magnetic moment value of the trivalent ion of element with atomic number 22.

Accepted Answer

The transition compounds exhibit colour only if their ions of transition elements contain unpaired electrons in $d$ -orbital so that $d - d$ transition of electrons can take place. ${Cu}^{+}$ ion is colourless because it does not contain unpaired electrons in $3 d$ -orbital.

The element with atomic number 22 is titanium. The outer electronic configuration of trivalent titanium is, ${Ti}^{3 +} \to [Ar] 4 s^{0} 3 d^{1}$

The magnetic moment due to spin of unpaired electrons is given by $μ = \sqrt{n (n + 2)} BM$

The number of unpaired electrons in trivalent ion of titanium is one.

Therefore, the magnetic moment of trivalent ion of element with atomic number 22

$μ = \sqrt{1 (1 + 2)} BM = \sqrt{3} BM$

The value of magnetic moment of the trivalent ion of element with atomic number 22 is 1.732 BM.

Why is ${Cu}_{2} I_{2}$ colourless? Calculate the magnetic moment value of the trivalent ion of element with atomic number 22.

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Why is Cu2I2 colourless? Calculate the magnetic moment value of the trivalent ion of element with atomic number 22.