
The number of possible resonance structures for is:
A.
B.
C.
D.
Answer
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Hint: Lewis systems, furthermore mentioned to as Lewis dot diagrams, Lewis dot formulas, Lewis dot structures, electron dot systems, or Lewis electron dot structures (LEDS), are figures that show the bonding between atoms of a molecule and the lone pairs of electrons that could exist inside the molecule. A Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds.
Complete step by step solution:
Unlike , even though the actual shape of is an average of three resonance structures. Carbon has four valence electrons, every oxygen has valence electrons, and there are extra for the price. This gives valence electrons.
So, the correct answer is B.
Additional information:
For a few molecules and ions, it's tough to determine which lone pairs must be moved to form double or triple bonds, and or extra exclusive resonance systems can be written for the identical molecule or ion. In such cases it is typical to put in writing they all with -manner arrows in between (see Example under). This is occasionally the case while more than one atom of the equal type surrounds the imperative atom, and is specifically common for polyatomic ions.
When this situation happens, the molecule's Lewis shape is stated to be a resonance structure, and the molecule exists as a resonance hybrid. Each of the distinct possibilities is superimposed on the others, and the molecule is taken into consideration to have a Lewis structure equivalent to some mixture of these states.
Note: The formal charge of an atom is computed because the difference among the quantity of valence electrons that a neutral atom might have and the quantity of electrons that belong to it in the Lewis structure. Electrons in covalent bonds break up equally between the atoms worried inside the bond. The overall of the formal prices on an ion need to be the same as the fee at the ion, and the full of the formal fees on an impartial molecule have to be the same to zero.
Complete step by step solution:
Unlike

So, the correct answer is B.
Additional information:
For a few molecules and ions, it's tough to determine which lone pairs must be moved to form double or triple bonds, and or extra exclusive resonance systems can be written for the identical molecule or ion. In such cases it is typical to put in writing they all with -manner arrows in between (see Example under). This is occasionally the case while more than one atom of the equal type surrounds the imperative atom, and is specifically common for polyatomic ions.
When this situation happens, the molecule's Lewis shape is stated to be a resonance structure, and the molecule exists as a resonance hybrid. Each of the distinct possibilities is superimposed on the others, and the molecule is taken into consideration to have a Lewis structure equivalent to some mixture of these states.
Note: The formal charge of an atom is computed because the difference among the quantity of valence electrons that a neutral atom might have and the quantity of electrons that belong to it in the Lewis structure. Electrons in covalent bonds break up equally between the atoms worried inside the bond. The overall of the formal prices on an ion need to be the same as the fee at the ion, and the full of the formal fees on an impartial molecule have to be the same to zero.
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