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urgent dot and cross diagram question

krisshP

My exam is so soon and I need help. How do you draw the draw and cross diagram of NO2?

Thanks soooo much

Reply 1

sophiekutie

Original post by krisshP

I 'm pretty sure it forms one double bond, and one single bond... Like so;

(edited 10 years ago)

Reply 2

username913907

Original post by sophiekutie

I 'm pretty sure it forms one double bond, and one single bond... Like so;

Original post by krisshP

My exam is so soon and I need help. How do you draw the draw and cross diagram of NO2?

Thanks soooo much

Pretty sure that is correct. NO2 is a radical which readily dimerises to form N2O4

Reply 3

charco

Study Forum Helper

Original post by krisshP

My exam is so soon and I need help. How do you draw the draw and cross diagram of NO2?

Thanks soooo much

Yes previous post is good. There is a little subtlety with one dative coordinate bond and the actual structure involves delocalisation making the two N-O bonds identical with a bond order of 1.5.

Reply 4

sophiekutie

Original post by charco

Yes previous post is good. There is a little subtlety with one dative coordinate bond and the actual structure involves delocalisation making the two N-O bonds identical with a bond order of 1.5.

Thanks

this was what I mean but couldn't remember the word 'dative'

Can I ask, do you know the difference between SN1 and SN2 reactions?
Is it that SN1 is a 2 step reaction for tertiary halogenoalkanes, and SN2 is a 1 step for primary and secondary?

(edited 10 years ago)

Reply 5

krisshP

Original post by charco

Yes previous post is good. There is a little subtlety with one dative coordinate bond and the actual structure involves delocalisation making the two N-O bonds identical with a bond order of 1.5.

What about HNO3?
Thanks a ton.

Reply 6

charco

Study Forum Helper