Periodic Table

Elements are listed by

• Order of importance

• Order of discovery

• Random

• Atomic number

Groups represent

• Columns

• Rows

• Neither

Periods represent

• Rows

• Columns

• Neither

How many periods are there?

• 7
• 30
• 0
• 12

How many groups?

• 15

• 18

• 35

• 6

Which element is in group 18 but has only TWO valence electrons?

• Helium (He)

• Neon (Ne)

• Nothing

• Argon (Ar)

CHNOPS =

• a made up word
• a element
• Carbon, Hydrogen, Nitrogen, Oxygen, Sulfur
• Carbon, Tin,Oxygen, Sulfur, Nitrogen

This Group ( MINUS Hydrogen) is ?

• Alkali metals

• Alkaline earth metals

• Poor metals

• Metaloids

This group represents ?

• Alkaline earth metals

• Transition metals

• Inner transition metals

• Hallogens

The highlighted represents?

• Inner transition metals

• Transition metals

• Hallogens

• Not classified