Why is the third ionisation energy of ma...

Why is the third ionisation energy of manganese exceptionally high ?

Text Solution

Verified by Experts

Electronic configuration of `Mn : [Ar]3d^(5)4s^(2)`
Electronic configuration of `Mn^(2+):[Ar]3d^(5)`
Since the `Mn^(2+)` ion has half - filled `(3d^(5))` d - subshell, it is highly stable. Hence, a large amount of energy is required to remove an electron from stable `Mn^(2+)` ion to form less stable `Mn^(3+)` ion.

Doubtnut Promotions Banner Desktop Dark

Doubtnut Promotions Banner Mobile Dark

|

Topper's Solved these Questions

D - AND F - BLOCK ELEMENTS
CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK|60 Videos
D - AND F - BLOCK ELEMENTS
CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Multiple Choice Question)|31 Videos
D - AND F - BLOCK ELEMENTS
CHHAYA PUBLICATION|Exercise SOLVED NCERT TEXTBOOK PROBLEMS (NCERT EXERCISE QUESTIONS)|66 Videos
COORDINATION COMPOUNDS OR COMPLEX COMPOUNDS
CHHAYA PUBLICATION|Exercise PRACTICE SET 21|2 Videos
ELECTROCHEMISTRY
CHHAYA PUBLICATION|Exercise PRACTICE SET 4(Answer the following questions)|14 Videos

Similar Questions

Explore conceptually related problems

What is the unit of ionisation energy?

Why is the atomization energy of transition elements too high? Which one show more number of oxidation states between lanthanoid and actinoid?

Knowledge Check

If the 1st ionisation energy of H atom is 13.6 eV then the 2nd ionisation energy of He atom is

A

27.2eV

B

40.8eV

C

54.4eV

D

108.8eV

Similar Questions

Explore conceptually related problems

Why is heat called a type of energy?

Why is ionisation Energy also known as ionisation Potential?

Why the activation energy in chemisorption is high ?

Explain why the second ionisation enthalpies of alkali metals are very high.

Which has greater ionisation energy and why-S or P?

Why are the ionisation energies of 5d-metals greater than those of 3d-metals ?

Why is the 1st ionisation potential of B less than that of Be ?

CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS

If CO(2) is passed through a green aqueous solution of potassium manga...
04:00
|
Cu(2)S is black and Cu(2)O is red through Cu^(+) has no unpaired elect...
02:22
|
Why does copper dissolve in ammonia solution ?
02:49
|
Mercurous ion exists as Hg(2)^(2+). Explain.
05:06
|
Cu^(+) salts are colourless but Cu^(2+) salts are coloured. Give reaso...
04:02
|
Which of the following can be considered to be a transition element - ...
05:28
|
Ti^(3+), V^(3+), Mn^(2+), Fe^(3+), Co^(2+) form coloured aqueous solut...
05:17
|
Why do gadolinium (Gd, Z = 64) and lutetium (Lu, Z = 91) have very hig...
03:49
|
Which element has the lowest atomisation energy in 3d - series ? Expla...
05:20
|
Stability of Fe^(3+) ion is greater than Mn^(3+) ion but less than Cr^...
03:08
|
Fe has a much lower tendency to get oxidised than Mn and Cr - explain....
03:43
|
Scandium is considered to be a transition element though it does not f...
03:31
|
Why do the transition elements of the 5d - series have much higher ion...
Text Solution
|
Fluorine is more electronegative than oxygen. Yet the highest oxidatio...
02:07
|
It is difficult to find lanthanides in their purest form. Explain.
04:28
|
The transition metal ions form complexes with water, but does not reac...
04:06
|
The standard reduction potential of four elements A, B, C & D are - 0....
05:01
|
Name any two properties of interstitial compounds that are different f...
02:48
|
Why do the elements of chromium group have high melting points ?
05:56
|
Why is the third ionisation energy of manganese exceptionally high ?
03:23
|