Molecular Models: Lewis Electron Dot Structures and...

Molecular Models: Lewis Electron Dot Structures and Molecular Geometry Part A: Use the molecular model kit and complete the following table. | Molecular formula | Total number of valence electrons | Lewis electron dot structure | Sketch of three-dimensional geometry | Name of the molecular geometry | Molecule is polar or nonpolar? | | :--- | :--- | :--- | :--- | :--- | :--- | | N2 | 5 + 5 = 10 | :N?N: | N?N | Linear | Non polar | | NH3 | 5 + 3 × 1 = 8 | H-?-H | H-N-H | Trigonal Pyramidal | Polar | | H2S | 2 × 1 + 6 = 8 | H:S?:H | S-H H | Bent | Polar | | CO2 | 4 + 12 = 16 | :O=C=O: | O=C=O | Linear | Non polar | | PF3 | 5 + 21 = 26 | :F?-P?-F?: | P-F F F | Trigonal Pyramidal | Polar |

Transcript

00:01 Hello student, we have given our first molecule as n2.

00:04 So first we have to find out valence electron present in n2.

00:11 So each nitrogen contain 5 valence electrons.

00:13 So there are 2 nitrogen that contain 10 valence electron, 10 valence electron and we have to write its lewis structure, lewis structure.

00:27 So each nitrogen contain 5 electron.

00:33 So among these 3, they will form triple bond as n triple bond n and both nitrogen contain 1 1 lone pair.

00:43 So this is the lewis structure and then we have to write their 3d structure or 3d geometry.

00:50 So in 3d they also form linear structure as their same as their lewis structure.

00:58 Then we have to find out their geometry.

01:02 This geometry is known as linear geometry and as this is linear so this structure is non polar.

01:15 This is the polarity and next we have our second structure as nh3.

01:23 So here nitrogen contain 5 valence electron and hydrogen contain 3, all 3 hydrogen contain 3.

01:30 So valence electron is equal to 8 and their lewis structure can be represented as because each hydrogen share 1 electron and 1 electron are donated by nitrogen and it contain 1 lone pair.

01:49 So this is the lewis structure, lewis structure and we have 3d structure as the lone pair can be represented as this and 3 hydrogen atom.

02:05 So this structure or shape or geometry is triagonal pyramidal, triagonal pyramidal and this structure is polar in nature.

02:24 We have our next molecule as h2s.

02:30 Sulphur belongs to oxygen family so it contain 6 valence electron and we have 2 hydrogen...

Question

Please give Ace some feedback