Answer
a. an element located in group 2A is a Metal
b. a good conductor of eletricity is a Metal
c. Chlorine is a Nonmetal
d. Arsenic is a Metalloid
e. an element that is not shiny is a Nonmetal
f. Oxygen is a Nonmetal
g. Nitrogen is a Nonmetal
h. Tin is a Metal
Work Step by Step
there is a heavy line on the periodic table separating metals (left) and nonmetals (right), along that line are the metalloids ( except aluminium)
you can see the heavy zigzag line at figure 4.6
c. Chlorine is from group 7A (right), so it is a Nonmetal
study this at page 107, topic "Metals, Nonmetals, and Metalloids"
