Using the Periodic Table
A Periodic table is an arrangement of all the elements in order of
increasing atomic number. Furthermore, it organizes elements into
their chemical families(groups).
Use the information below and the periodic table on pp. 304-305 of
your text to answer the following questions.
I. Write the symbol for each of the following elements.
1. Oxygen__________
II. The number of protons in a stable atom is equal to the number
of the atom’s electrons.
The number of protons in an atom is the same as the atom’s
atomic number(Listed on the periodic table). Atomic number=# of
protons
The number of protons and neutrons combined equal the
atom’s atomic mass or weight as it is often called ( also listed on
the periodic chart) . Atomic mass(weight)=# of protons +# of
neutrons
When using the Atomic Mass listed in the periodic table (in
your textbook) round it to a whole number.
2. Nitrogen__________
3. Hydrogen__________
4. Helium__________
5. Sodium__________
** You can find out what the element is if you know either the
atomic number (which is the same number as the number of
protons) or the atomic mass (which is the same as protons plus
neutrons).
1. This atom has 2 protons and 2 neutrons.
What is the atomic mass of the atom?__________
6. Chlorine__________
What is the atomic number of the atom?__________
7. Sulfur__________
How many electrons does the atom have?__________
8. Tin__________
9. Iron_________
10. Zinc__________
What is this element?_________________________
(either name or symbol)
2. This atom has 7 protons. Its atomic mass is 14.
How many neutrons does this atom have?__________
11. Calcium__________
How many electrons does the atom have?__________
12. Potassium__________
What is this element?_________________________
13. Carbon__________
14. Silver__________
15. Mercury__________
3. This atom has 1 proton. Its atomic mass is 1.
How many neutrons does this atom have?__________
How many electrons does the atom have?__________
What is this element?_________________________
4. This atom has 29 protons and 35 neutrons.
What is the atomic mass of the atom?__________
How many electrons does the atom have?__________
What is this element?_________________________
5. This atom has 82 protons. Its atomic mass is 207.
How many neutrons does this atom have?__________
How many electrons does the atom have?__________
What is the atomic number of the atom?__________
What is this element?_________________________
10. The atomic mass of this atom is 222. It has 86 protons.
How many neutrons does this atom have?__________
How many electrons does the atom have?__________
What is the atomic number of the atom?__________
What is this element?_________________________
11. This atom has 11 protons.
What is the atomic mass of the atom?__________
What is this element?_________________________
What is this element?_________________________
6. This atom has 26 protons.
What is the atomic mass of the atom?__________
What is this element?_________________________
7. This atom has 6 neutrons. Its atomic mass is 12.
How many protons does this atom have?___________
What is the atomic number of the atom?__________
What is this element?_________________________
8. This atom has 79 protons.
What is the atom’s atomic mass?__________
How many electrons does the atom have?__________
What is this element?_________________________
9. This atom has 69 neutrons and 50 protons.
What is the atomic mass of the atom?__________
12. This atom has 14 neutrons. Its atomic mass is 27.
How many protons does this atom have?___________
What is the atomic number of the atom?__________
What is this element?_________________________
13. This atom’s atomic number is 10.
How many neutrons does this atom have?__________
What is the atomic mass of the atom?__________
What is this element?_________________________
14. This atom has 20 protons and 20 neutrons.
What is the atomic mass of the atom?__________
What is this element?_________________________
15. This atom has an atomic mass of 210. It has 125 neutrons.
How many protons does this element have?__________
What is the atomic number of the atom?__________
How many neutrons does this atom have?____________
How many electrons does the atom have?__________
What is this element?_____________