Periodic Table Groups, Periods and Valence Electrons

A ___________ is an arrangement of elements in rows

• Periodic table
• Period
• Group
• Noble gases 

Tags

NGSS.HS-PS1-1

The periodic table elements are arranged by ____________ (which are in numerical order):

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

Which group of the periodic table is composed of inert (not reactive)  gases?

• Metals
• Alkaline earth metals
• Nonmetals
• Noble gases

Elements which are shiny, conduct electricity and heat are called

• metals
• nonmetals
• metalloids
• nonexistent

Which element is not a metal?

• H
• Re
• Al
• Co

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Tags

NGSS.HS-PS1-1

Which number on the periodic table tells you the number of valence electrons an element has? 

• Period Number
• Group Number
• Atomic Number
• Mass number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which number on the periodic table tells you the number of energy levels an element has? 

• Period Number
• Group Number
• Atomic Number
• Mass Number

Periods run...

• Horizontal, side to side
• Vertical, up and down