Understanding Selenium's Atomic Structure

This video tutorial explains how to write the atomic orbital diagram for selenium. It begins with determining the electron configuration, using selenium's atomic number to distribute electrons across energy levels. The tutorial then demonstrates constructing the atomic orbital diagram, showing electron placement around the nucleus. The video emphasizes understanding electron distribution in energy levels and orbitals, providing a clear visual representation of selenium's atomic structure.

What is the first step in writing the atomic orbital diagram for selenium?

• Write the electron configuration

• Determine the valence electrons

• Find the atomic mass

• Identify the number of neutrons

How many protons does selenium have?

• 34

• 16

• 18

• 52

What is the significance of selenium's atomic number?

• It shows the number of protons and electrons in a neutral atom

• It determines the element's reactivity

• It indicates the number of neutrons

• It represents the atomic mass

Which energy level is filled after 2p6 in selenium's electron configuration?

• 3s2

• 4s2

• 3p6

• 3d10

How many electrons are used up to the 3d10 level in selenium's electron configuration?

• 40

• 20

• 30

• 34

What is the electron configuration notation for selenium's 4p level?

• 4p4

• 4p2

• 4p6

• 4p3

What is the purpose of the atomic orbital diagram?

• To show the number of protons

• To illustrate the arrangement of electrons around the nucleus

• To determine the atomic mass

• To calculate the element's reactivity

In the atomic orbital diagram, how are electrons represented?

• As protons

• As circles

• As neutrons

• As arrows in opposite directions

What is the final step in constructing the atomic orbital diagram for selenium?

• Identifying the valence electrons

• Determining the number of neutrons

• Pairing up the 4p electrons

• Calculating the atomic mass

What do both the electron configuration and atomic orbital diagram aim to show?

• The arrangement of electrons around the nucleus

• The atomic mass

• The number of neutrons

• The element's reactivity