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Silicon is immediately under carbon in the Periodic Table. Predict the geometry of

Chapter 1, Problem 1.67

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QUESTION:

Silicon is immediately under carbon in the Periodic Table. Predict the geometry of silane,SiH4.

Questions & Answers

QUESTION:

Silicon is immediately under carbon in the Periodic Table. Predict the geometry of silane,SiH4.

ANSWER:

Key points 

VSEPR

A method for predicting bond angles based on the idea that electron pairs repel each other and stay as far apart as possible.

Regions of Electron Density Around Central Atom

Predicted Distribution of Electron Density

Predicted Bond Angles

4

Tetrahedral

3

Trigonal planar

2

Linear

Step 1 of 2

We have to predict the geometry of silane

The total number of valence electrons in  molecule is .

So silicon forms four covalent bonds with the hydrogen atoms.

We can draw the Lewis structure as

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