Question

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

Answer 1

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