Problem: The molecule cyanazine, once used as a herbicide, has now been phased-out by the EPA because of its significant human toxicity.a) Add lone pairs, as needed, to the structure of cyanazine.b) Indicate the hybridization of the specified atoms. Be sure to consider any lone pairs you added in part a.

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We are asked to add lone pairs, as needed, to the structure of cyanazine and indicate the hybridization of the specified atoms


The number of electrons that the valence shell of each 2nd-row element prefers to “own” is determined by its group number on the periodic table. This will determine how many bonds it wants to have in its most stable state.



The hybridization of the atom can be determined by using the table below: 


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Problem Details

The molecule cyanazine, once used as a herbicide, has now been phased-out by the EPA because of its significant human toxicity.

a) Add lone pairs, as needed, to the structure of cyanazine.

b) Indicate the hybridization of the specified atoms. Be sure to consider any lone pairs you added in part a.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Hybridization concept. You can view video lessons to learn Hybridization. Or if you need more Hybridization practice, you can also practice Hybridization practice problems.