Periodic Trends 6 Flashcards
Atoms want to be in a _ state
Stable
Sometimes the only way to find stability for atoms is to _
Bond with another atom
The connection between two atoms is called its _
Chemical bond
A chemical bond is the force that combines two or more atoms together by
Their electrons
Two elements of chlorine bond to form
Cl2
Because two elements of chlorine have equal electronegativity, the bond will look like
Cl-Cl
_ in Cl-Cl indicates they are bonded
-
In Cl-Cl, each atom of Cl contributes _ to the bond
One electron
Electronegativity is the tendency of an atom to _ in a chemical bond
Attract electrons
Electronegativity increases from _ to _ in a column
Bottom
Top
Electronegativity increases from _ to _ across a period
Left
Right
Noble gases don’t have _ since they do not bond
Electronegativity values
F is most _
Electronegative
_ is least electronegative
Fr
Reactivity measures how likely an atom will _ or _ with another atom
React
Bond
Reactivity depends on ionization energy _
How difficult it is to get rid of outer electron
Reactivity also depends on valence electrons _
How badly atom needs to gain an extra electron
_ and _ have opposite trends
Metals
Nonmetals
_ increases as you move down a group
Reactivity
Reactivity increases as you
Move across a period from left to right
(Metals) reactivity increases down and decreases left to right because
Metals react by losing electrons
Nonmetals reactivity decreases as you _ in a group
Move down
Nonmetals reactivity increases as you _ in a period
Move left to right
Nonmetals react by
Gaining electrons
Ionic radius is the measurement of half the distance between
The nuclei of two ions
