Answer
a. Au, metal;
b. F, nonmetal;
c. Na, metal;
d. Sn, metal;
e. Ar, nonmetal
Work Step by Step
a. Au is the symbol for gold on the periodic table. This is a metal since it lies on the left side of the periodic table. Elements that lie on the left side or in the middle of the periodic table are metals.
b. F is the symbol for fluorine on the periodic table. This is a nonmetal since it lies on the upper right side of the periodic table. Elements that lie on the upper right side of the periodic table are nonmetals.
c. Na is the symbol for sodium on the periodic table. This is a metal since it lies on the left side of the periodic table. Elements that lie on the left side or in the middle of the periodic table are metals.
d. Sn is the symbol for tin on the periodic table. This is a metal since it lies on the left side of the periodic table. Elements that lie on the left side or in the middle of the periodic table are metals.
e. Ar is the symbol for argon on the periodic table. This is a nonmetal since it lies on the upper right side of the periodic table. Elements that lie on the upper right side of the periodic table are nonmetals.
