How are elements arranged in the Periodic Table?

• In rows called columns, by increasing mass number.

• In rows called periods, by increasing mass number.

• In rows called columns, by increasing atomic number.

• In rows called periods, by increasing atomic number.

The electronic configuration of oxygen is:

• 2.4

• 2.6

• 1.2.4

• 2.8

Mendeleev’s Periodic Table was revolutionary because:

• He ordered elements by both their properties and their atomic number.

• He left gaps for undiscovered elements.

• He used his Periodic Table to make predictions about undiscovered elements.

• He ordered elements by both their properties and their atomic mass.

What group are the Alkali Metals in?

• Group 1

• Group 2

• Group 7

• Group 0

What group are the Alkali Earth Metals in?

• Group 1

• Group 2

• Group 7

• Group 0

What group are the Halogens in?

• Group 1

• Group 2

• Group 7

• Group 0

What group are the Noble Gases in?

• Group 1

• Group 2

• Group 7

• Group 0

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

Tags

NGSS.HS-PS1-1

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

Tags

NGSS.HS-PS1-1

Most of the elements on the periodic table are classified as _____.

• Metals
• Nonmetals
• Metalloids
• Periods

Tags

NGSS.HS-PS1-1