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Inorganic Chemistry

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8 Sep 2008 11:51:43 IST

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what is first ionisation energy of o2+,o2-,o2?

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what is first ionisation energy of o2+,o2-,o2?

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Ashwini

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Joined: 27 Jan 2008

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12 Sep 2008 00:08:22 IST

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i dont kno the exact values... but the order should be:
O2+> O2-> O2
because you are removing electrons from the bonding MO in the first case, fully filled antibonding MO in the second case and half filled antibonding MO in the third case.
hope that answers ur question.
pls correct me if wrong

kushi

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Joined: 3 Aug 2008

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12 Sep 2008 00:39:18 IST

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order of 1st ionisation energy is o^2+>o^2>o^2-

this is surely correct because in case of o^2+ the no of electrons in valence shell decreases so size also decreases resulting in increasing the force of attraction which leads to inc the IE

while in o^2- the no of valence electrons in the outermost shell inc result in inc the size which leads to inc the repultion between elect than attraction so IE is low

as IE is the energy req to remove an elect so it is easy or less energy req to remove elect from outermost shell

i hope u will satisfied

so rate me

aNdRoMeDa

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Joined: 10 Sep 2007

Posts: 1319

12 Sep 2008 00:43:30 IST

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d order given by d second person is rite

itz O2+>O2>O2-

coz in O2 + d elctrons no is less then d protons thus d net force of attraction is more( hope ya knw slater's rule)

thus itz difficult 2 remove elctrons

wer as in O2- d elctrons r very loosely bound thus can b removed easily

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