Atomic Structure
Atomic Number
The number of protons
Electrons are organized by
Atomic Number
Where metals can be found on the periodic table
To the left of the staircase
When an element gains an electron it becomes a _____ ion
negative
The three metal groups
Alkali metals, alkaline metals, and transition metals
Atomic Mass
Number of protons and nuetrons
The vertical columns are called
Groups
True/False: A nonmetal is a good conductor
False
Sodium ion
NA+1
The group where halogens are found
Group 17
The amount of electrons in the first shell
2
The horizontal rows are called
Periods
Metalloid properties
Are a combination of metal and nonmetal properties
How oxygen bonds
Gains two electrons
Earth Metals
Alkaline metals (Group 2)
Electrons in the outermost shell
Elements in the same group have the same
Number of valence electrons
An element that is shiny, malleable, and is a good conductor is most likely a
Metal
The charge ion calcium will form and why.
Calcium will form a +2 ions because it will lose both its valence electrons.
The most reactive metals
Alkali metals (group 1)
Octet Rule
Atoms need 8 valence electrons to be stable
The inventor of the periodic table
Dmitri Mendeleev
All metals except Mercury are _________ at room temperature
solids
The number of electrons noble gases will lose or gain--be specific--and why.
None because they have 8 valence electrons (Helium has 2) and are stable.
The group gold is found in
transition metals