Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question
HCN?
Substance Cl;PO HCN CF,H2 IF, Lewis structures Number of bonding groups Number of lone pairs Number of electron groups about the central atom Electron geometry Molecular geometry Approximate bond angles Polarity of molecule or ion Number of resonance structures Hybridization state about the central atom
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Transcribed Image Text:Substance Cl;PO HCN CF,H2 IF, Lewis structures Number of bonding groups Number of lone pairs Number of electron groups about the central atom Electron geometry Molecular geometry Approximate bond angles Polarity of molecule or ion Number of resonance structures Hybridization state about the central atom
Expert Solution
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Step 1

Given molecule:

HCN

Step 2

Hydrogen is an element having 1 valence electrons, Carbon is having 4 valence electrons, and nitrogen is having 5 valence electrons.

Thus, the total valence electrons will be 1+4+5 = 10 valence electrons.

Thus, the Lewis structure of HCN molecule is represented as follows:

Chemistry homework question answer, step 2, image 1

Step 3

According to the Lewis structure of HCN molecules there are 4 bonding electron pairs and one non-bonding electron pairs.

Therefore, HCN has 4 bonding groups.

Number of lone pairs = 1

Step 4

As carbon is forming triple bond with nitrogen and single bond with hydrogen thus, the number of electron groups around carbon is 4.

Thus, the molecular geometry and electron geometry at carbon atom will be linear as it has 2 bonding pairs.

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