Lithium and Ionic Charges

The video tutorial explains how to determine the ionic charge of lithium using two methods: referencing the periodic table and analyzing electron configuration. Lithium, found in group one of the periodic table, typically has an ionic charge of one plus. The video also covers lithium's electron configuration, showing how it loses an electron to achieve a stable noble gas configuration similar to helium. This process results in a positive ionic charge. The tutorial concludes by emphasizing the importance of understanding periodic trends and electron configurations in predicting ionic charges.

What is one method to determine the ionic charge of lithium?

• By measuring its atomic mass

• By checking its position in the periodic table

• By calculating its density

• By observing its color

In which group of the periodic table is lithium found?

• Group 1

• Group 18

• Group 2

• Group 17

What is the atomic number of lithium?

• 1

• 2

• 4

• 3

How many electrons does a neutral lithium atom have?

• 4

• 3

• 2

• 1

What happens to lithium when it bonds with other elements?

• It gains an electron

• It loses an electron

• It remains neutral

• It becomes a noble gas

What is the electron configuration of lithium before it loses an electron?

• 1s² 2p¹

• 1s² 2s¹

• 1s² 2s²

• 1s¹ 2s²

After losing an electron, lithium achieves the electron configuration of which noble gas?

• Argon

• Neon

• Krypton

• Helium

Why is lithium stable after losing an electron?

• It has a full outer shell

• It gains more protons

• It changes its atomic number

• It becomes a metal

What is the ionic charge of lithium after it loses an electron?

• 2+

• 1-

• 0

• 1+

What are two ways to determine the ionic charge of an element?

• Checking the periodic table and electron configuration

• Observing its color and texture

• Using a microscope and a scale

• Measuring its temperature and pressure