Ions and Electron Configurations

The video tutorial explains electron configurations of ions, focusing on cations like sodium, magnesium, and aluminum, and anions like fluorine and nitrogen. It highlights the stability of noble gas configurations and the process of electron removal or addition to achieve this stable state.

What is the primary difference between an atom and an ion?

• An ion has a different number of protons.

• An ion has a different number of electrons.

• An ion has a different atomic mass.

• An ion has a different number of neutrons.

When forming a sodium plus ion, how many electrons are removed from a sodium atom?

• No electrons

• Three electrons

• Two electrons

• One electron

What is the electron configuration of a sodium plus ion?

• 1S2 2S2 2P4

• 1S2 2S2 2P3

• 1S2 2S2 2P6

• 1S2 2S2 2P5

How many electrons are removed when forming a magnesium 2+ ion?

• Three electrons

• Four electrons

• Two electrons

• One electron

What is the common oxidation state of aluminum?

• 1+

• 2+

• 3+

• 4+

Why do sodium, magnesium, and aluminum ions prefer specific charges?

• To decrease their atomic number

• To increase their atomic mass

• To match the electron configuration of a noble gas

• To achieve a higher energy state

What is the electron configuration of a fluorine anion?

• 1S2 2S2 2P5

• 1S2 2S2 2P3

• 1S2 2S2 2P6

• 1S2 2S2 2P4

How many additional electrons does nitrogen need to become an anion?

• Two electrons

• Three electrons

• One electron

• Four electrons

What is the electron configuration of a nitrogen anion?

• 1S2 2S2 2P3

• 1S2 2S2 2P4

• 1S2 2S2 2P5

• 1S2 2S2 2P6

Why do fluorine and nitrogen anions aim to achieve a noble gas configuration?

• To decrease their atomic mass

• To increase their atomic number

• To achieve a stable electron arrangement

• To become more reactive