Periodic Table of Elements

Which elements have 1 valence electron?

• period 1

• group 1

• group 4

Elements in the same ________ are more chemically similar.

• group
• period
• club
• table

The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds

• alkali metals (group 1)

• Halogens (Group 17)

• atomic number

• valence electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The Modern Periodic Table of Elements is arranged by

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

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Tags

NGSS.MS-PS1-1

Name group 1A on the periodic table.

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

Name group 8A on the periodic table.

• alkali metals
• alkaline earth metals
• transition metals
• noble gases

Which group has the most reactive nonmetals?

• alkali metals
• noble gases
• metalloids
• halogens

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Name this group: These metals are the most reactive.

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