Name___________________
Hw: Atomic Structure and Table of the Elements
Use the periodic Table of the Elements to fill in the chart below:
Element
Atomic
number
Number
protons
Number
electrons
Number
neutrons
Atomic
Mass
Lithium
Oxygen
Argon
Mercury
Lead
Carbon
Iron
Hydrogen
Potassium
Sodium
Chlorine
Gold
Name five elements that are gasses at room temperature.
Name five elements that are solids at room temperature.
Name two elements that are liquids at room temperature.
Name five elements that float in water. Name five elements that sink in water.
Mass
Number
In the space below, diagram the electron configuration of a hydrogen atom.
In the space below, diagram the electron configuration of a silicon atom.
In the space below, diagram the electron configuration of a potassium atom.
Below are electron configurations of two atoms. Tell the names of the elements, the atomic
numbers, and the mass numbers for each.
What are the atomic masses and mass numbers of the following elements?
magnesium
lithium
oxygen
potassium
iron
Write the symbols of the following elements:
manganese
mercury
nickel
nitrogen
hydrogen
calcium
copper
potassium
sodium
sulfur
What is an isotope? Give an example.
What is an ion? Give an example.
Complete the following
1. Use your Periodic Table of the Elements to complete the chart below. Make note of the charge
to determine whether or not it represents an ion.
Symbol
Charge
K
+
Protons
Electrons
+2
Cl
12
18
18
F
Atomic
number
16
neutral
10
2. An atom has 11 protons and 12 neutrons and 10 electrons
A. What is its mass number?
B. What is its atomic number?
C. What is its charge?
D. How many electrons are in the outer most shell?
E. What is the symbol for this element?
2. Indicate whether the following elements are solid, liquid or gas at room temperature (20 °C)
iodine, magnesium, nitrogen, carbon, mercury, oxygen
3. Sketch a temperature vs. time graph that shows all the phase changes for the following
elements:
Iron
carbon
bromine