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Period

• Increasing atomic number of the horozintal rows in the table

• Only located metal

• Box a Chemical elements

• The increase in box

Who is chemist created periodic table?

• Priestley

• M.Lomonosov

• Antoine Laurent Lavoisier

• Dmitri Mendeleev

Vertical columns, called ...

• Long period

• Short period

• period

• groups

He, Ne, Ar, Kr, Xe, Rn

• Alkaline Earth metals

• Halogens

• Noble gases

• Carbon group

Alkali metals group

• Mg, Ca, Sr, Ba, Ra

• Li, Na, K, Rb, Cs, Fr

• B, Al, Ga, In

• F, Cl, Br, I, At

I am a metal

I am in group 2

I am in period 6

• S

• Ba

• Na

• Ca

I am a nonmetal

I am in pentod 2

I am in group 16/6A

• Ba

• O

• Al

• Mg

Which is a halogen?

• Helium

• Oxygen

• Chlorine

• Neptune

The modern Periodic Table  of Elements is arranged by

• atomic mass                            

•              

  valence electrons                 

• atomic number

• number of isotopes

Which is an alkali metal?

• Magnesium                        

•           Sodium

•                               

  Iron

• Europium