Periodic Table and Trend

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

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

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Tags

NGSS.HS-PS1-1

A horizontal row of elements in the periodic table.

• column
• group
• period

Elements in a ..................have similar chemical properties.  

• period
• group
• row

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In the modern periodic table elements are arranged by:

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

_____________ has the largest atomic radius

• Onganesson (118)

• Francium (87)

• Hydrogen (1)

• Fluorine (9)

Which direction do the groups on a periodic table run?

• up and down

• left to right

• diagonally

• they are scattered

Which direction do the periods runs on a periodic table run?

• up and down

• left to right

• diagonally

• they are scattered

What do the periods on a periodic table represent?

• the number of energy levels

• the number of groups

• the number of valence electrons

• the atomic number