Electron Configuration and Aluminum Properties

This video tutorial explains how to write the electron configuration for the aluminum ion (Al3+). It begins by discussing aluminum's neutral state on the periodic table, where it has 13 electrons. The tutorial then provides a step-by-step guide to writing the electron configuration for neutral aluminum, using the 1s, 2s, 2p, 3s, and 3p orbitals. Next, it explains how to convert this configuration to that of the Al3+ ion by removing three electrons, resulting in a stable configuration similar to the noble gas neon. The video concludes by highlighting the stability of this configuration and its significance in chemical bonding.

What is the first step in determining the electron configuration for the aluminum ion?

• Determine the atomic mass of aluminum.

• Find the position of aluminum in the periodic table.

• Write the electron configuration for neutral aluminum.

• Identify the number of neutrons in aluminum.

Why are elements on the periodic table considered neutral?

• They have an equal number of protons and electrons.

• They have no charge.

• They have an equal number of protons and neutrons.

• They have a balanced atomic mass.

How many electrons does neutral aluminum have?

• 13

• 10

• 16

• 14

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

• 3s

• 1s

• 2p

• 2s

How many electrons can the 2p orbital hold?

• 8

• 4

• 6

• 2

What is the electron configuration of neutral aluminum?

• 1s2 2s2 2p6 3s2 3p2

• 1s2 2s2 2p6 3s2 3p1

• 1s2 2s2 2p6 3s2 3p3

• 1s2 2s2 2p6 3s1 3p2

What happens to the electron configuration when aluminum becomes Al3+?

• Three electrons are added.

• Three electrons are removed.

• Two electrons are removed.

• The configuration remains the same.

Which noble gas has the same electron configuration as Al3+?

• Argon

• Helium

• Krypton

• Neon

Why is the electron configuration of Al3+ considered stable?

• It has more protons than electrons.

• It has a balanced atomic mass.

• It has a full outer shell.

• It has an equal number of protons and neutrons.

What is the significance of aluminum losing three electrons in chemical bonding?

• It becomes a non-metal.

• It achieves a stable electron configuration.

• It becomes a noble gas.

• It gains a positive charge.