Gallium Trichloride and Valence Electrons

The video tutorial explains how to write the Lewis structure for gallium trichloride (G3). It begins by counting the valence electrons for gallium and chlorine, then places gallium at the center with chlorine atoms around it. The tutorial discusses forming chemical bonds and completing octets, noting that gallium is an exception to the octet rule. The molecular geometry is described as trigonal planar with 120° bond angles. The video concludes with a summary of the structure and geometry.

What is the total number of valence electrons in Gallium Trichloride?

• 27

• 18

• 21

• 24

What group is gallium in, and how many valence electrons does it have?

• Group 17, 7 valence electrons

• Group 13, 3 valence electrons

• Group 18, 8 valence electrons

• Group 1, 1 valence electron

Which element is placed at the center of the Lewis structure for Gallium Trichloride?

• Hydrogen

• Gallium

• Oxygen

• Chlorine

How many valence electrons are used to form chemical bonds in Gallium Trichloride?

• 6

• 12

• 18

• 24

How many chlorine atoms are bonded to the central gallium atom in Gallium Trichloride?

• 4

• 3

• 2

• 1

What is the total number of chlorine atoms in Gallium Trichloride?

• 4

• 3

• 2

• 1

Why is it acceptable for gallium to have only six valence electrons in its Lewis structure?

• Gallium is highly electronegative.

• Gallium forms double bonds.

• Gallium is an exception like aluminum and boron.

• Gallium is a noble gas.

What is the molecular geometry of Gallium Trichloride?

• Linear

• Trigonal planar

• Tetrahedral

• Bent

What is the significance of the purple color in the molecular geometry model?

• It represents a lone pair.

• It represents a chlorine atom.

• It represents a double bond.

• It represents the central gallium atom.

What is the bond angle between the chlorine atoms in Gallium Trichloride?

• 109.5°

• 120°

• 90°

• 180°