Periods & Groups
A period runs which direction on the periodic table?
Horizontal (left to right)
Group 1 elements are called what?
Alkali Metals
Most elements on the periodic table are what type?
Metals
Where are metalloids located on the periodic table?
Along the stair-step line
What are electrons found in?
Shells or energy levels
A group runs which direction on the periodic table?
Vertical (up and down)
Which group has 2 valence electrons and is reactive but not as much as Group 1?
Alkaline Earth Metals
What property describes how shiny a metal is?
Luster
Metalloids can act like metals or nonmetals depending on what?
The reaction partner
What do we call the electrons in the outermost shell?
Valence electrons
The number of valence electrons determines what?
The group/family an element belongs to
Which family includes iron, copper, and nickel?
Transition Metals
Nonmetals are usually brittle and ______ conductors.
Poor
Which metalloid is used in computers and glass?
Silicon (Si)
What is the shorthand method for writing electron configurations?
Use the noble gas from the previous row in brackets
The number of electron shells determines what?
The period number
Which family has 7 valence electrons and is very reactive?
Halogens
The ability to be hammered into sheets is called what?
Malleable
Which side of the table are the most reactive metals found on?
The left side
What block contains the transition metals?
d-block
Elements in the same group have what in common?
Similar properties and the same number of valence electrons
Which family has a full outer shell and is unreactive?
Noble Gases
The ability to be stretched into wire is called what?
Ductile
What determines how reactive an element is?
The number of valence electrons
What block includes the lanthanides and actinides?
f-block