What is the molecular geometry about nitrogen in C...

Question

What is the molecular geometry about nitrogen in CH3NH2?

Jules Bruno · Accepted Answer

We’re being asked to determine the geometry around nitrogen in the CH3NH2 molecule.To determine the geometry of this molecule, we need to do the following steps:Step 1: Determine the central atom in the molecule.Step 2: Calculate the total number of valence electrons present.Step 3: Draw the Lewis structure for the molecule.Step 4: Determine the electronic and molecular geometry of the molecule.Let’s begin by determining the central atom.[readmore]Step 1: Carbon (EN = 2.5) is less electronegative than nitrogen (EN = 3.0).Recall: An atom with a lower electronegativity is the central atom and hydrogen cannot be the central atom.H atom will be at the corner while C and N will be at the center.Step 2: The total number of valence electrons present in CH3NH2 is:Group                        Valence ElectronsH         1A                   5 x 1 e– = 5 e–C         4A                   1 x 4 e– = 4 e–N         5A                   1 x 5e– = 5 e–Total: 14 valence e–Step 3: The Lewis structure of CH3NH2 is:We use these rules to draw a Lewis structure:The electrons are used to make bonds first.Electrons remaining after bonds are drawn, are distributed on the corner atoms as lone pairs to complete their octets.The electrons that remain after being distributed on corner atoms, are used as lone pairs on the central atom.H can only make 1 bond. Step 4: To determine the geometry around the nitrogen atom, we need to count the electron groups around the nitrogen atom.There are 3 atoms around N atom and 1 lone pair.There is a total of 4 electron groups: Electron geometry = tetrahedralTo determine the molecular geometry:The central atom is denoted as A.Corner atoms/groups are denoted as X.Lone pairs are denoted as E.The notation of nitrogen atom is AX3E.The geometry for the AX3E notation is trigonal pyramidal.The molecular geometry around nitrogen atom is trigonal pyramidal.

Problem: What is the molecular geometry about nitrogen in CH3NH2?

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Problem: What is the molecular geometry about nitrogen in CH3NH2?

FREE Expert Solution

Problem Details

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