Valence Electrons and Radon Properties

The video tutorial explains two methods to determine the number of valence electrons for radon (Rn). The first method involves using the periodic table, where radon is identified as a noble gas with eight valence electrons. The second method uses the electron configuration, confirming radon has eight valence electrons by examining the highest energy level. The tutorial also briefly covers drawing the Lewis structure for radon, emphasizing its eight valence electrons.

What is the first method mentioned for finding the number of valence electrons in radon?

• Observing the physical state

• Counting the protons

• Referring to the periodic table

• Using the atomic number

In which group of the periodic table is radon found?

• Group 13

• Group 18

• Group 8

• Group 1

How many valence electrons does radon have?

• Four

• Eight

• Two

• Six

Which noble gas is an exception to having eight valence electrons?

• Argon

• Neon

• Krypton

• Helium

What is the condensed electron configuration for radon?

• 5s2 5p6

• 4s2 4p6

• 7s2 7p6

• 6s2 6p6

What is the significance of the highest energy level in electron configuration?

• It indicates the number of valence electrons

• It shows the number of protons

• It determines the atomic mass

• It reveals the element's color

How would you represent radon in a Lewis structure?

• Rn with two dots

• Rn with four dots

• Rn with eight dots

• Rn with six dots

What is the group number sometimes referred to for radon?

• Group 18A

• Group 1A

• Group 2A

• Group 8A