Nonmetals and Metalloids
The Metalloids
Families of Nonmetals
What Is a Nonmetal?
nonmetals are the elements that lack most of the properties of metals
the nonmetals are located to the right of the zigzag line in the periodic table
Physical Properties
in general, the physical properties of nonmetals are opposite to those that characterize the metals
most nonmetals are dull, solid nonmetals are brittle, lower densities
Compounds of Nonmetals
when nonmetals and metals react, valence electrons move from the metal atoms to the nonmetal atoms
The Carbon Family
group 14 is the carbon family, each element has 4 valence electrons
The Nitrogen Family
group 15 is the nitrogen family, each element has 5 valence electrons
The Oxygen Family
group 16 is the oxygen family, each element has 6 valence electrons
The Halogen Family
group 17 is the halogen family, each element has 7 valence electrons
The Noble Gases
group 18 are the noble gases, each element has a full outer shell, or 8 valence electrons
Hydrogen
each atom only has 1 proton and 1 electron
on the border between the metals and the nonmetals are seven elements called metalloids
some characteristics of metals, some characteristics of nonmetals
Keegan Davis 11/17/19
the most useful property of the metalloids is their varying ability to conduct electricity