Periodic Table I
Group 2 elements are known as ....
Alkaline earth metals
The most reactive family of nonmetals
halogens (group 17) or 7A
Which elements are located on the stairs?
Metalloids
The noble gases are the least reactive because...
they have a completely full valence shell
What are the only 2 liquids on the periodic table?
Mercury and bromine
Phosphorus belongs to group number .........
15 or 5A
The group/family that has 2 valence electrons is
Alkaline Earth Metals (group 2)
The most NON-reactive group is known as the .....
Noble gases
The alkali metals are the most reactive because...
The have only 1 valence (outer shell) electron
This family of elements have the properties of:
1. They can be cut easily due to being soft
2. The most reactive metal group
Alkali Metals
Groups 3 - 12 are called ...
transition metals
How is the periodic table arranged?
by increasing atomic number
Name an element chemically similar to bromine
Any element in group 17 ( 7A) (Same group = similar properties)
Between Magnesium and Barium, the one that has a larger atomic radius
barium
This family of elements have the properties of:
1. Radioactive, silvery-white metals
2. Most are man-made
Lanthanides & Actinides
Strontium belongs to this family in the periodic table
Alkaline earth metals
The period has the greatest level of shielding (due to having the most electron shells)
Period 7
The electrons in the outermost energy level are called...
valence electrons
Between carbon and lead, the element that has a smaller atomic radius is...
carbon
This family of elements have the properties of:
1. Good conductors
2. Malleable and ductile
3. Usually hard & tough
Transition metals
How many periods on the periodic table?
7
Atomic numbers 57-71 are called the
Lanthanide Series
True/False - Hydrogen is an alkali metal
FALSE
Explain why the radius (size) of an atom increases as you go down a group
More electron shells
This family of elements have the properties of:
1. Shiny like metals
2. Brittle like nonmetals
3. Semiconductors
Metalloids