Rubidium Electron Configuration Concepts

The video tutorial explains how to write the electron configuration for rubidium and its ion, Rb+. It begins with the configuration for neutral rubidium, using the periodic table to determine the number of electrons. The tutorial then details the step-by-step process of distributing 37 electrons across various energy levels. Finally, it explains how losing a valence electron results in the rubidium ion, Rb+, and provides the electron configuration for the ion.

What is the main objective of the video?

• To understand chemical bonding

• To learn about the periodic table

• To study atomic structure

• To write the electron configuration for Rb+

What is the atomic number of rubidium (Rb)?

• 35

• 36

• 37

• 38

How many electrons does a neutral rubidium atom have?

• 35

• 36

• 37

• 38

Which orbital is filled first in the electron configuration of rubidium?

• 3p

• 1s

• 4d

• 2s

How many electrons are used after filling the 3d orbital in rubidium?

• 30

• 25

• 20

• 35

What is the highest energy level in rubidium's electron configuration?

• 3d

• 5s

• 4p

• 4s

How many valence electrons does rubidium have?

• 3

• 2

• 1

• 4

What happens to rubidium when it becomes Rb+?

• It gains an electron

• It loses a proton

• It loses a valence electron

• It gains a neutron

What is the charge of an electron?

• Positive

• Negative

• Neutral

• Variable

In the electron configuration of Rb+, which orbital loses an electron?

• 2s

• 3d

• 5s

• 4p