Here’s a faster way for exactly how to determine the hybridization of one atom in a molecule. This will conserve you a lot of time.

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Here’s what you do:

Look in ~ the atom.Count the variety of atoms associated to it (atoms – not bonds!)Count the number of lone pairs attached to it.Add these two numbers together.If it’s 4, your atom is sp3.If it’s 3, her atom is sp2.If it’s 2, her atom is sp. 

(If it’s 1, it’s probably hydrogen!)

This works in at least 95% the the situations you will check out in Org 1.

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Table of Contents

1. Some an easy Worked instances Of The Hybridization Shortcut

sp3 hybridization: amount of attached atoms + lone bag = 4

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One would certainly not intend both nitrogen atoms to be sp2 hybridized, since that would cause a cyclic, flat, conjugated device with 8 pi electron : in various other words, antiaromatic. Ns can’t discover a crystal structure of the core molecule to confirm (but would welcome any additional information!)

NOTE – (added afterwards) If you draw the resonance type where the nitrogen lone pair creates a pi bond v the carbonyl carbon, then the ring system has 10 electrons and would because of this be “aromatic”.