Bromide Ion and Valence Electrons

The video tutorial explains how to find the Lewis structure for the bromide ion (Br-). It begins by discussing bromine, its position on the periodic table, and its seven valence electrons. The tutorial then demonstrates how to construct the Lewis structure for bromine and explains that atoms are more stable with eight valence electrons. By adding an extra electron, bromine becomes the bromide ion, and the video shows how to represent this with a negative sign and brackets in the Lewis structure. The tutorial concludes with a brief thank you from Dr. B.

What is the main focus of the video tutorial?

• The Lewis structure for the bromide ion

• The atomic structure of hydrogen

• The periodic table arrangement

• The chemical properties of oxygen

In which group is bromine found on the periodic table?

• Group 12

• Group 3

• Group 17

• Group 1

How many valence electrons does bromine have?

• 8

• 7

• 5

• 6

Why are atoms more stable with eight valence electrons?

• They have a complete outer shell

• They become positively charged

• They lose energy

• They can form more bonds

What happens when an extra electron is added to bromine?

• It forms a covalent bond

• It becomes unstable

• It loses its valence electrons

• It becomes a bromide ion

How is the bromide ion represented in the Lewis structure?

• With a double bond

• With a negative sign and brackets

• With a positive sign

• With a single line

What is the charge of the bromide ion?

• Negative

• Neutral

• Variable

• Positive