Molecular polarity Quiz Review

Which of the following geometries could be nonpolar?

• bent
• tetrahedral
• trigonal pyrimidal
• none of the above

Why is the molecule nonpolar?

• There are lone pairs on the central atom.

• There are different types of elements bonded to the central atom.

• There are no lone pairs on the central atom and all of the atoms bonded to the central atom are the same.

Why is the molecule polar?

• The shape is bent and there are are lone pairs on the central atom.

• There are different types of elements bonded to the central atom.

• The molecule is symmetrical

Why is the molecule polar?

• There is a lone pair on the central atom and a high electronegative nitrogen pulling the electrons.

• There are different types of elements bonded to the central atom.

• The electronegativities of the hydrogens pull the electrons away from the nitrogen.

Why is the molecule polar?

• The molecule is symmetrical and the hydrogens cancel out the pulling of the Fluorine

• There are different types of elements bonded to the central atom. The F pulls the electrons.

• There are no lone pairs on the central atom and all of the atoms bonded to the central atom are the same.

Why is the molecule nonpolar?

• There are lone pairs on the central atom.

• There are different types of elements bonded to the central atom.

• There are no lone pairs on the central atom and all of the atoms bonded to the central atom are the same. (symmetrical)

Why is the molecule polar?

• There are lone pairs on the central atom.

• There are different types of elements bonded to the central atom (not symmetrical)

• There are no lone pairs on the central atom and all of the atoms bonded to the central atom are the same.

Polar molecules have

• no charges.

• slight positive and negative charges on opposite ends of the molecules.

• only positive charges.

• either positive or negative charges, but not both.

Tags

NGSS.HS-PS2-6

The molecule show would have a ​ ​ ​ (a)   shape and ​ (b)   be symmetric making the molecule ​ (c)  

• Tetrahedral
• Linear
• not polar
• would
• trigonal pyramid
• tetrahedral
• polar
• triganol pyramid
• would not

5. CH₂Cl₂

• Polar

• Non-polar