Draw an atom of Silicon.  It has 14 protons and a mass of 28 units

 

 

 

 

 

 

 

 

 

Fill in the blanks for this atom

50

 

Sn

 

118.7

Protons:____

Electrons:____

Mass:____

Neutrons:____

# electrons in first level:____

# electrons in second level:____

 

Circle one of the two words for the element Tantalum  (it is element # 73)

 

Metal or nonmetal

Left side or right side of table

Wants to gain or lose electrons

Conductor vs. nonconductor