Lewis Structures and Valence Electrons

The video tutorial explains how to write the Lewis structure for sulfur hexabromide (SBr6). It begins by counting the valence electrons, placing sulfur in the center, and arranging bromine atoms around it. The tutorial demonstrates forming chemical bonds and completing the octets for bromine atoms. It highlights sulfur's ability to have an expanded octet, making it an exception to the octet rule. The video concludes by verifying the formal charges to ensure the structure is the most favorable representation.

How many valence electrons are present in sulfur hexabromide (SBr6)?

• 42

• 36

• 48

• 54

In the Lewis structure of SBr6, where is the sulfur atom placed?

• At the top

• In the center

• At the bottom

• On the side

What is the purpose of placing pairs of electrons between atoms in the Lewis structure?

• To change the element

• To reduce the valence electrons

• To increase the number of atoms

• To form chemical bonds

Why is sulfur in SBr6 allowed to have more than an octet of electrons?

• It is a noble gas

• It is a metal

• It is an exception to the octet rule

• It has fewer electrons

What is the term used when an atom has more than eight electrons in its valence shell?

• Expanded octet

• Full octet

• Reduced octet

• Incomplete octet

What ensures that the Lewis structure of SBr6 is the most favorable?

• The number of atoms

• The size of the molecule

• The formal charges

• The color of the atoms

How can the representation of bonding electrons be simplified in the Lewis structure?

• By using dots

• By using colors

• By using lines

• By using numbers