Elements in this family are extremely reactive with water and are composed of only metals.
Alkali Metals
How could you classify the elements in light blue on the periodic table above?
Metals
This element reacts vigorously with water and has electrons in 5 shells.
Rb - Rubidium
Draw the Lewis diagram for Fluorine.
What does the group number tell you about an element?
The number of valence electrons it has.
Elements in this family are often used as disinfectants.
Halogens
How would you classify an element that is not shiny, not malleable and does not react with acid?
Non-Metal
This element has 6 valence electrons and 3 energy levels.
S - Sulphur
Which group # on the periodic table creates ions with a -2 charge?
Group 6
How many protons does Ca have?
20
Elements in this family have 2 valence electrons
Alkaline Earth Metals
How would you classify an element that reacts with water, is ductile and has metallic lustre?
Metal
This element is the only noble gas with only 2 electrons in its outermost shell.
He - Helium
Draw the Lewis diagram for He.
What does the period number tell you about an element?
Elements in this family are not reactive.
Inert/Noble Gases
How would you classify an element that is not malleable, but reacts with acid and conducts electricity?
Metalloid
This element can be used as a cleaning product and has 3 orbits.
Cl - Chlorine
Draw a Lewis diagram for any one of the alkaline earth metals.
What element has the following electron configuration:
2 , 8 , 8 , 1
Potassium
This element has no family.
Hydrogen
Classify the following elements as metals, nonmetals or metalloids: Argon, Calcium, Silicon.
Ar = Nonmetal
Ca = Metal
Si = Metalloid
This element creates an ion with a +3 charge and is a metalloid.
B - Boron
Fix the following statement:
Nitrogen loses 3 protons to create its ion. This results in it having 4 protons and 7 electrons so its ion has a charge of +3.
Nitrogen gains 3 electrons to create its ion. This results in it having 7 protons and 10 electrons so its ion has a charge of -3.
Explain why the noble gases do not create ions.
Because they have a full outer shell. They already have all the valence electrons they need.