Answer

Verified

346.5k+ views

**Hint:**In a $d - d$ transition, an electron in $d$ orbital on the metal is excited by a photon to another $d$ orbital of higher energy. In complexes of the transition metals, the $d$ orbitals do not all have the same energy. In centrosymmetric complexes, $d - d$ transitions are forbidden by the Laporte rule.

**Complete answer:**

A spectrochemical series is a list of ligands ordered on ligand strength and a list of metal ions based on oxidation number, group and its identity. In crystal field theory, ligands modify the difference in energy between the $d$ orbitals called the ligand-field splitting parameter for ligands or the crystal-field splitting parameter, which is mainly reflected in differences in color of similar metal-ligand complexes.

According to spectrochemical series:

$Cl < {H_2}O < C{N^ - }$.

So, as the ligand field increases wave number also increases.

**So, the correct answer is $A)23000c{m^{ - 1}},32000c{m^{ - 1}}$**

**Additional information:**

The order of the spectrochemical series can be derived from the understanding that ligands are frequently classified by their donor or acceptor abilities. Some, like $N{H_3}$, are $\sigma $bond donors only, with no orbitals of appropriate symmetry for$\pi $bonding interactions. Bonding by these ligands to metals is relatively simple, using only the$\sigma $ bonds to create relatively weak interactions. Another example of a $\sigma $bonding ligand would be ethylenediamine; however, ethylenediamine has a stronger effect than ammonia, generating a larger ligand field split.

**Note:**

The metal ions can also be arranged in order of increasing $\Delta $, and this order is largely independent of the identity of the ligand. In general, it is not possible to say whether a given ligand will exert a strong field or a weak field on a given metal ion. However, when we consider the metal ion, $\Delta $ increases with increasing oxidation number, and $\Delta $ increases down a group.

Recently Updated Pages

How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE

Why Are Noble Gases NonReactive class 11 chemistry CBSE

Let X and Y be the sets of all positive divisors of class 11 maths CBSE

Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE

Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE

Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE

Trending doubts

Which are the Top 10 Largest Countries of the World?

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Write a letter to the principal requesting him to grant class 10 english CBSE

Difference Between Plant Cell and Animal Cell

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

One cusec is equal to how many liters class 8 maths CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

How many crores make 10 million class 7 maths CBSE

Change the following sentences into negative and interrogative class 10 english CBSE