Polarity and Geometry of AlCl3

The video explores whether AlCl3 is polar or non-polar. It begins by explaining that AlCl3 can exist as Al2Cl6 under certain conditions but focuses on AlCl3. Despite aluminum being a metal, the compound is covalent. The video examines the electronegativity difference between aluminum and chlorine, finding it significant but not ionic. The bonds are polar, but the trigonal planar geometry causes the dipoles to cancel, making the molecule non-polar overall.

What is the primary focus of the video regarding AlCl3?

• To explore whether AlCl3 is polar or non-polar.

• To discuss the color of AlCl3.

• To determine if AlCl3 is a solid or liquid.

• To analyze the taste of AlCl3.

What type of compound is AlCl3 considered to be?

• Ionic compound

• Metallic compound

• Covalent compound

• Amphoteric compound

What is the electronegativity value of chlorine?

• 2.98

• 3.16

• 4.00

• 1.61

Why are the bonds between aluminum and chlorine considered polar?

• Because they are non-reactive.

• Because they form a metallic bond.

• Because there is a large difference in electronegativity.

• Because they share electrons equally.

What is the molecular geometry of AlCl3?

• Trigonal planar

• Tetrahedral

• Bent

• Linear

How do the chlorine atoms in AlCl3 affect its overall polarity?

• They cancel out each other's pull.

• They have no effect on polarity.

• They make the molecule ionic.

• They enhance the polarity.

What happens to the shared electrons in a polar bond?

• They are not shared at all.

• They spend more time around the more electronegative atom.

• They spend more time around the less electronegative atom.

• They are shared equally between atoms.

What is the overall polarity of the AlCl3 molecule?

• Polar

• Non-polar

• Ionic

• Amphoteric

Why does the trigonal planar geometry lead to a non-polar molecule?

• Because the pulls from the chlorine atoms cancel each other out.

• Because the electronegativity differences are too small.

• Because the atoms are in a straight line.

• Because the aluminum atom is at the center.

What is the significance of the trigonal planar shape in AlCl3?

• It makes the molecule reactive.

• It makes the molecule ionic.

• It ensures the molecule is non-polar.

• It causes the molecule to be colored.