Ionic Charges and Electron Configurations

The video tutorial introduces ions, focusing on cations and anions. It explains how cations are formed by losing electrons, using sodium and magnesium as examples, and highlights group trends in the periodic table. Anions are discussed with fluorine as an example, showing how they gain electrons to achieve a stable configuration. The tutorial emphasizes the octet rule and how elements achieve stability by mimicking noble gases.

What are the two types of ions discussed in the video?

• Neutrons and Protons

• Anions and Protons

• Cations and Neutrons

• Cations and Anions

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

• 1s2 2s2 2p6 3p1

• 1s2 2s2 2p5 3s1

• 1s2 2s2 2p6 3s1

• 1s2 2s2 2p6 3s2

According to the octet rule, how many electrons do most elements want to have in their outer shell?

• 10

• 6

• 2

• 8

What happens to sodium when it loses one electron?

• It becomes negatively charged

• It remains neutral

• It becomes positively charged

• It gains two electrons

How many electrons does magnesium lose to achieve a stable electron configuration?

• One

• Three

• Two

• Four

What charge does magnesium have after losing electrons?

• +1

• -1

• -2

• +2

Which group of elements will all have a +1 charge after losing electrons?

• Group 18

• Group 17

• Group 2

• Group 1

What is the electron configuration of fluorine before it gains an electron?

• 1s2 2p6 3s2

• 1s2 2s2 2p5

• 1s2 2s2 2p6

• 1s2 2p5 3s1

What charge does fluorine have after gaining an electron?

• +2

• -1

• -2

• +1

Which group of elements typically has a -1 charge after gaining an electron?

• Group 18

• Group 17

• Group 2

• Group 1