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Excited state

Excited state

(Science: chemistry, radiobiology) An atom or nucleus which possesses more energy than its ground state energy.


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Re: What are delocalized electrons?

... bonds", that's a mistake. The point is the hybridization state of the carbons, i.e. sp2 hybridization (see wiki ), which leaves one ... normal p-orbitals and thus these electron need smaller energy to be excited (look for molecular orbitals ). They are anchored in the chloroplasts! ...

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by JackBean
Sat Jan 01, 2011 10:37 pm
 
Forum: Botany Discussion
Topic: What are delocalized electrons?
Replies: 5
Views: 2857

Why do intact chloroplasts fluoresce?

... fluorescence even in intact photosystems is because an electron may be excited and return to the ground state several times before actually being picked up by the electron transport chain. Is that ...

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by mamoru
Tue Mar 09, 2010 8:04 am
 
Forum: Botany Discussion
Topic: Why do intact chloroplasts fluoresce?
Replies: 10
Views: 4553

Re: Why do intact chloroplasts fluoresce?

... thought that the reason why chlorophyll fluoresces is because the photoexcited electrons spontaneously drop back down to the ground state. This drop doesn't happen in an intact chloroplast, because the excited electron is captured ...

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by mamoru
Tue Mar 09, 2010 12:32 am
 
Forum: Botany Discussion
Topic: Why do intact chloroplasts fluoresce?
Replies: 10
Views: 4553

Re: Why do intact chloroplasts fluoresce?

... thought that the reason why chlorophyll fluoresces is because the photoexcited electrons spontaneously drop back down to the ground state. This drop doesn't happen in an intact chloroplast, because the excited electron is captured ...

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by aidane
Mon Mar 08, 2010 6:00 pm
 
Forum: Botany Discussion
Topic: Why do intact chloroplasts fluoresce?
Replies: 10
Views: 4553

Why do intact chloroplasts fluoresce?

... why isolated chlorophyll fluoresces--an electron that has been excited to a higher energy orbital drops back down to the ground-state orbital, releasing energy as heat and light/fluorescence. In an intact chloroplast, the ...

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by aidane
Sun Mar 07, 2010 5:21 am
 
Forum: Botany Discussion
Topic: Why do intact chloroplasts fluoresce?
Replies: 10
Views: 4553
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