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The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is (1981 - 1 Mark)
- a)C > N > O > F
- b)O > N > F > C
- c)O > F > N > C
- d)F > O > N > C
Correct answer is option 'C'. Can you explain this answer?
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The correct order of second ionisation potential of carbon, nitrogen, ...
NOTE : Ionization potential is amount of ener gy required to take out most loosely bonded electron from neutral atom. Its value depends on stability of atom
(electronic configuration)
C – 1s2 2s2 p2 C+ – 1s2 2s2 p1
N – 1s2 2s2 p3 N+ – 1s2 2s2 p2
O – 1s2 2s2 p4 O+ – 1s2 2s2 p3
F – 1s2 2s2 p5 F+ – 1s2 2s2 p4
C – 1s2 2s2 p2 C+ – 1s2 2s2 p1
N – 1s2 2s2 p3 N+ – 1s2 2s2 p2
O – 1s2 2s2 p4 O+ – 1s2 2s2 p3
F – 1s2 2s2 p5 F+ – 1s2 2s2 p4
(for second ionisation potential, IE2) As for IE2 the electron in all the cases is to be removed from 2p orbital so it must follow the order C < N < O < F (i.e. increase across a period) But in case of O+, the 2p orbital is half-filled and is more stable as compared to others. So the order becomes : C < N < F < O or O > F > N > C
Most Upvoted Answer
The correct order of second ionisation potential of carbon, nitrogen, ...
The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is:
b) N < o="" />< f="" />< />
This is because after losing one electron, the remaining electrons are more strongly held by the nucleus, making it harder to remove another electron. Nitrogen has a relatively low second ionisation potential because it has a half-filled p orbital, which provides some extra stability. Oxygen has a slightly higher second ionisation potential because it has a filled p orbital, which makes it harder to remove another electron. Fluorine has an even higher second ionisation potential because it has a full p orbital and is very electronegative, meaning it strongly attracts electrons towards itself. Carbon has the highest second ionisation potential because it has only two valence electrons and a relatively small atomic radius, making it difficult to remove another electron.
b) N < o="" />< f="" />< />
This is because after losing one electron, the remaining electrons are more strongly held by the nucleus, making it harder to remove another electron. Nitrogen has a relatively low second ionisation potential because it has a half-filled p orbital, which provides some extra stability. Oxygen has a slightly higher second ionisation potential because it has a filled p orbital, which makes it harder to remove another electron. Fluorine has an even higher second ionisation potential because it has a full p orbital and is very electronegative, meaning it strongly attracts electrons towards itself. Carbon has the highest second ionisation potential because it has only two valence electrons and a relatively small atomic radius, making it difficult to remove another electron.
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Community Answer
The correct order of second ionisation potential of carbon, nitrogen, ...
NOTE : Ionization potential is amount of ener gy required to take out most loosely bonded electron from neutral atom. Its value depends on stability of atom
(electronic configuration)
C – 1s2 2s2 p2 C+ – 1s2 2s2 p1
N – 1s2 2s2 p3 N+ – 1s2 2s2 p2
O – 1s2 2s2 p4 O+ – 1s2 2s2 p3
F – 1s2 2s2 p5 F+ – 1s2 2s2 p4
C – 1s2 2s2 p2 C+ – 1s2 2s2 p1
N – 1s2 2s2 p3 N+ – 1s2 2s2 p2
O – 1s2 2s2 p4 O+ – 1s2 2s2 p3
F – 1s2 2s2 p5 F+ – 1s2 2s2 p4
(for second ionisation potential, IE2) As for IE2 the electron in all the cases is to be removed from 2p orbital so it must follow the order C < N < O < F (i.e. increase across a period) But in case of O+, the 2p orbital is half-filled and is more stable as compared to others. So the order becomes : C < N < F < O or O > F > N > C
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The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is (1981 - 1 Mark)a)C > N > O > Fb)O > N > F > Cc)O > F > N > Cd)F > O > N > CCorrect answer is option 'C'. Can you explain this answer?
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The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is (1981 - 1 Mark)a)C > N > O > Fb)O > N > F > Cc)O > F > N > Cd)F > O > N > CCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is (1981 - 1 Mark)a)C > N > O > Fb)O > N > F > Cc)O > F > N > Cd)F > O > N > CCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is (1981 - 1 Mark)a)C > N > O > Fb)O > N > F > Cc)O > F > N > Cd)F > O > N > CCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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