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What does is mean to say a charge is quantized?
It means the charge is an integer multiple of some basic charge. If the charge consists of a certain number electrons, you can have 1 electron, 2 electrons, 3 electrons, etc., but you can't have 1.5 electrons, or pi electrons.
What is the difference between electromeric effect and inductive effect?
Electromeric effect is the temporary effect involving complete transference of electrons and is concerned with pi-electrons while inductive effect which may be induced, timely induced or PERMANENT involves displacement of shared electron pair or tilt transference of electrons and moves through sigma-bonds.
What effect does ultra violet light have on bilirubin molecule?
High energy photons are absorbed by the conjugated double bonds. The double bonds in the molecule then have the energy to rearrange to a non-conjugated state. The new state is more soluble, so your body can excrete it.
Which subatomic particle determines reactivity?
Electrons, for chemical reactions
What is resonance in organic chemistry?
Resonance structures exist in organic and inorganic chemistry. Resonance structures refers to the ability to create (draw) a molecule in more than one way. However, one structure is usually favored over the other. Most of the time you will see these structures denoted with a (major) or (minor) next to it. This will indicate that the majority of the time that structure will be formed.
What do the structures of aromatic compounds have in common?
all aromatic compounds have 1) delocalized pi electrons (usually in conjugated double bonds) 2) 4n+2 pi electrons to be shared on adjacent atoms... this is "Huckles" rule 3) a planar structure 4) rings.. aromatic compounds are cyclic
What do the structures of all aromatic compounds have in common?
all aromatic compounds have 1) delocalized pi electrons (usually in conjugated double bonds) 2) 4n+2 pi electrons to be shared on adjacent atoms... this is "Huckles" rule 3) a planar structure 4) rings.. aromatic compounds are cyclic
What type of organic compounds show UV absorption bands?
Aromatic compounds, conjugated dienes, and compounds with extensive pi-electron systems often show UV absorption bands. These compounds have delocalized electrons that can undergo electronic transitions when exposed to ultraviolet light, leading to absorption of UV radiation.
What are paired electrons?
Pi electron pairs are electron pairs residing in the p orbital (as in s, p, d, f). This is the electron orbital responsible for double bonds and conjugated molecules according to molecular orbital theory.
Is benzoquinone aromatic?
No - although it has sufficient electrons to obey the Huckel rule (4n+2) pi electrons. The two olefins in the ring are cross-conjugated through the carbonyl groups. The lack of proper conjugation precludes aromaticity. The non aromaticity is evidenced by different bond-lengths around the ring
How many pi bond in h2o?
You can think of pi bonds in the terms of pi electrons as well which will become more important in terms of aromaticity. A Triple bond has 1 sigma bond & 2 pi bonds. There are 6 electrons in a triple bond; 2 sigma electrons and 4 pi electrons. The two unhybridized p orbitals on each atom on either side of the triple bond are perpendicular to each other. So, if you are trying to determine the number of pi electrons in an aromatic monocyclic compound and you have an uninterrupted combination of sp & sp2 orbitals (sp3 does not have p orbitals), whenever you come across a triple bond you would add 4 pi electrons and for a double bond you would add 2 pi electrons. The important thing to remember though is if the question asks for the number of electrons delocalized in the ring because of the aforementioned p orbitals in a triple bond being perpendicular only 2 of the 4 available pi electrons would delocalize in the ring. The really dirty trick is that Huckel's rule applies to electrons in the cloud, delocalized electrons.
What is the requirement for a molecule to be UV active?
UV-vis active molecules must have easily deformed electron clouds. This requirement is met for molecules with lots of pi-bonds that are directly connected together, or conjugated.
What is yo soy conjugated?
"Yo soy" IS conjugated. It is the conjugated form of the verb "Ser"
What parts of speech are conjugated?
Verbs are conjugated.
How many valence electrons occupy sigma bond orbitals an pi bond orbitals in c14h10?
26 sigma 7 pi
Are Ch3 and CH3-CH2 electron releasing?
Yes, all the alkyl groups when attached to an aromatic system or conjugated systems act as the electrons releasing groups.
Why are carotenoids coloured?
Carotenoids have conjugated bonds. Wavelengths of visible light are absorbed when electrons are excited to higher energy levels. The complementary colour is to that absorbed is observed.
