Polarity and Molecular geometry Chem unit 4

Front

What is the VSEPR shape of a molecule with one central atom and three bonded atoms, with one lone pair?

Back

Trigonal pyramidal.

Front

What is the Lewis structure for BCl₃?

Back

The Lewis structure for BCl₃ shows a boron atom in the center with three chlorine atoms bonded to it, and no lone pairs on the boron.

Front

What is the Lewis structure for NBr₃?

Back

The Lewis structure for NBr₃ shows a nitrogen atom in the center with three bromine atoms bonded to it, and one lone pair on the nitrogen.

Front

What is the VSEPR shape of a molecule with two bonded atoms and one lone pair?

Back

Bent.

Front

What is the VSEPR shape of a molecule with four bonded atoms and no lone pairs?

Back

Tetrahedral.

Front

What is the VSEPR theory?

Back

VSEPR theory (Valence Shell Electron Pair Repulsion theory) predicts the shape of molecules based on the repulsion between electron pairs around a central atom.

Front

How does the presence of lone pairs affect molecular geometry?

Back

Lone pairs take up more space than bonding pairs, which can alter the bond angles and overall shape of the molecule.

Front

What is the bond angle in a trigonal pyramidal molecule?

Back

The bond angle in a trigonal pyramidal molecule is approximately 107 degrees.

Front

What is the bond angle in a bent molecule?

Back

The bond angle in a bent molecule is typically around 104.5 degrees.

Front

What is the bond angle in a tetrahedral molecule?

Back

The bond angle in a tetrahedral molecule is 109.5 degrees.