2. What is a period?

3. What is the symbol for the following elements.

a. Magnesium

b. Potassium

c. Iron

d. Copper

4. What are the names of the following elements.

a. C

b. CI

d

sr

Answers & explanations:

2. A period refers to a horizontal row on the periodic table.

3. The symbols for the following samples are as follows. These can be found on a periodic table.

a. Mg

b. K

c. Fe

d. Cu

4.

a. Carbon

b. Chlorine

There is no element with the symbol D.

Sr goes with Strontium