Organization
Periods
Which element is found in group 1 period 5?
Rubidium
Group 18 are elements known as
The noble gases
The elements have properties that are similar to both metals and nonmetals
Metalloids
How many valence electrons are found in group 18?
The columns on the periodic table are called
Groups
Which element is found in group 1, period 1?
Hydrogen
Alkali Metals
These elements are good conductors of heat and electricity.
Metals
How many valence electrons are found in group 17?
7 Valence Electrons
The periodic table is now organized in order of
Increasing atomic number
Which element is found in group 2, period 4?
Calcium
Groups 3-12 are known as the
Transition Metals
These elements are brittle and poor conductors.
Nonmetals
How many valence electrons are found in group 1?
1 Valence Electron
The periodic table had previously been organized by
Increasing atomic mass
Oxygen
Group 17 elements are known as the
Halogens
All of group 18 are these types of elements
Nonmetals (noble gases)
Valence Electrons are found where?
The outermost orbital
The first scientist to attempt to arrange the elements was named
Mendeleev
Which element is found in group 8 period 4?
Iron
Group 2 elements are known as the
All of group 2 are these types of elements
Metals (alkaline earth)
Valence electrons are responsible for
Forming Bonds