Periodic Table

Who created the periodic table?

• Dimitri Mendeleev

• Neils Bohr

• Thomas Jefferson

• Bill Nye the Science Guy

Columns go up and ____.

Rows go left and _____.

Rows are the same as _______.

• columns

• rows

• periods

• groups

All of the elements in a period have the same number of _____.

• orbitals

• valence electrons

The first row has _ orbitals.

• 1

• 2

• 3

• 4

The second row has _ orbitals.

• 1

• 2

• 3

• 4

The third row has _ orbitals

• 1

• 2

• 3

• 4

Columns are the same as _______.

• columns

• rows

• periods

• groups

The elements in the same group have the same number of ________.

• orbitals

• valence electrons