Periodic Table

Periodic Table

By Keriann Adamson

Open Ended

What is the Periodic Table of Elements?

Periods

The horizontal rows on the periodic table

All elements in the same period have the same number of energy levels in their electron cloud

Groups

The vertical columns on the periodic table

All elements in the same group have the same number of valence electrons

Electron Clouds

​Electron clouds are broken down into shells or energy levels, that each hold a certain number of e-

• Level 1 (closest to the nucleus): holds a max of 2 e-

• Level 2: holds up to 8 e-

• Level 3: holds up to 8 e- (for our purposes)

• Level 4: holds up to 18 e- (for our purposes)

Multiple Choice

What is the maximum number of electrons that can be held in the first shell (level one) of the electron cloud?

• 1

• 2

• 3

• 4

Multiple Choice

What is the maximum number of electrons that can be held in the third shell (level one) of the electron cloud?

• 4

• 2

• 7

• 8