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Why are the bond lengths in no3- all identical and shorter than a nitrogen-oxygen single bond?
NO3- has three resonance structure. One double bond between N and O and another two N - O single bond. Since the double bond can be formed between N and any other O it is said that it has a resonance structure. This means that the true structure of NO3- is not any of this structure, but rather a hybrid of all three. Hence all 3 bond lengths would be identical AND shorter than single bond as it is basically an average between single and double bond. It is of course longer than a double bond
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Which of the following two compounds has the shortest nitrogen-nitrogen bond H2NNH2 or HNNH?
HNNH has the shorter nitrogen-nitrogen bond because it has a triple bond between the nitrogen atoms, which is shorter and stronger than the single bond in H2NNH2.
Identical rock types identical fossils and very similar mountain ranges are found on different continents that are separated by a wide ocean?
This evidence suggests that those continents were once connected as part of a single landmass known as Pangaea. Over time, the continents drifted apart due to the movement of tectonic plates, leading to their current separated positions.
Which is longer carbon-carbon single or double bond?
A carbon-carbon double bond is longer than a carbon-carbon single bond because the presence of the additional pi bond in the double bond results in more electron-electron repulsions, causing the double bond to be longer in length compared to a single bond.
Which is the compound with smallest carbon carbon bond?
The compound with the smallest carbon-carbon bond length is ethyne (C2H2), also known as acetylene. The carbon-carbon bond in ethyne is a triple bond, which is shorter and stronger than single or double bonds.
Why all carbon-carbon bond lengths in benzene are equal?
This is due to the resonation process that gives the allusion of all bond lengths being equal. In fact the bonds are in a state of constant flux and 'blend' into one. It is much like the apperance of a helicopters rotar blades i.e. in flight it appears as a blurr but whilst stationary it is clear that there are simply two blades -------------- The paragraph above is incorrect. Forget the fan blade and helicopter rotor analogies for resonance. There is NO evidence that bonds are jumping back and forth between a single bond and a double bond. That's just wrong. Resonance structures are simply an attempt at representing with Lewis structures something which really can't be represented with Lewis structures, that of a "partial" double bond. In carbonate ion, all of the carbon-oxygen bonds are identical, and have a length somewhere between that of a single bond and a double bond. The bond order for the carbon-oxygen bond in carbonate is 1.33. The partial double bond comes from delocalized pi bonding. In addition to the single bond between the central carbon and each oxygen, there is a delocalized pi bond between the central carbon and each of the oxygen atoms. There is overlap of the p-orbital on C with each of the p-orbitals on the oxygen atoms, but there are not enough electrons for three double bonds. It is this additional pi bonding which makes each of the carbon-oxygen bonds have a bond order of 1.33, and a bond length and bond strength between those of single and double carbon-oxygen bonds. ----- Pisgahchemist
What is The scientific name for identical twins.?
Identical twins (monozygotic) occur when a single egg, fertilized by a single sperm, splits into two identical halves. Two separate babies with identical DNA are formed. Identical twins are always the same sex and blood type. http://www.twin-pregnancy-and-beyond.com/identical-twins-or-fraternal-twins.html
How do you obtain identical copies of a single cell?
By cloning them
Identical twins happen when the two eggs are fertilised?
No. They have to come from the same egg and sperm to have the same DNA (and be identical). Fraternal twins are non identical twins and come from two separate eggs.
Why are identical twins identical and fraternal twins are not?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Why must any differences between identical twins be controlled only by the environment?
Identical twins have the same DNA - meaning that without the effects of environment they would be identical in every single way.
What is the process of creating a opoulation of genetically identical cells from a single cell?
Cloning
Why are identical twins and fraternal twins not the exact same?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Do identical twins have the same DNA?
Yes, identical twins have the same DNA because they are formed from a single fertilized egg that splits into two embryos. This means they share the same genetic information and are genetically identical.
How are identities made?
A monozygotic triple pregnancy is event in which identical triplets are conceived. This occurs when a single fertilized egg slits to form three identical babies.
What is a reproduction in which a single parent produces offspring's that are identical to the parent?
This is called "asexual reproduction".
To obtain identical copies of a single cell scientists make one of these?
To obtain identical copies of a single cell, scientists make a clone. This involves the process of producing genetically identical organisms or cells by asexual reproduction, such as in cloning techniques like somatic cell nuclear transfer.
Are identical twins mutations?
Identical twins are not considered mutations. They occur when a single fertilized egg splits into two during early development, resulting in two genetically identical individuals. This process is a natural occurrence and not a mutation.
