Electron Configuration of Lithium Ion (Li+)

This video tutorial explains how to write the electron configuration for the lithium ion (Li+). It begins by examining lithium's position on the periodic table and its neutral electron configuration. The tutorial then guides viewers through the process of writing the electron configuration for lithium, using a table of orbitals. It explains how lithium loses an electron to become Li+, achieving a stable electron configuration similar to the noble gas helium. The video concludes with a summary of the stability of the lithium ion.

What is the main objective of this video?

• To describe the properties of noble gases

• To explain the periodic table

• To write the electron configuration for Li+

• To discuss chemical bonding

What is the atomic number of lithium?

• 4

• 3

• 2

• 1

How many protons does a neutral lithium atom have?

• 4

• 3

• 2

• 1

Which orbital is filled first when writing the electron configuration for lithium?

• 2s

• 3s

• 2p

• 1s

How many electrons can the 1s orbital hold?

• 1

• 2

• 3

• 4

What is the electron configuration for neutral lithium?

• 1s1 2s1

• 1s2 2s2

• 1s2 2s1

• 1s1 2s2

What happens to lithium when it becomes Li+?

• It loses a proton

• It gains a proton

• It loses an electron

• It gains an electron

What is the electron configuration for Li+?

• 1s2

• 1s1

• 2s1

• 2s2

Why does lithium lose an electron when it bonds with other elements?

• To become neutral

• To achieve a full energy level

• To gain more protons

• To become a noble gas

What noble gas has the same electron configuration as Li+?

• Krypton

• Argon

• Helium

• Neon