The electronslocated on theouter energylevel of eachelement.
The Number of valenceelectrons ranges from 1 – 8▪Atoms with 1 – 7 valence electronsare unstable and require bonding tomake them complete▪Atoms with 8 valence electrons,The Noble Gases, are stable andtherefore do not bond with anyother elements.
A chemical bond between a metaland a nonmetal. It is when valence electrons areborrowed/taken from the metal to bringthe outer energy electron level of thenonmetal up to 8 The metal “Donates”electrons to thenon-metal
Metals donate, loan (lose)electrons while nonmetalsborrow (gain) electronsEach metal loses electronsbecoming a Positive (+) IonEach nonmetal gains electronsbecoming a Negative (-) Ion
Have a high conductivityreading > 700 Micro-SiemensEasily broken
A bond betweentwo like atoms ora nonmetal andanothernonmetal▪ The outer energylevel electrons areshared betweenthe two atoms tomake the valencecomplete at 8.
Are a very strong bond▪Are found in solid, liquid andgas form▪Bond like a chain link▪Low conductivity < 500micro-Siemens
Most atoms bythemselves are unstableAll atom families/groupsexcept group 18, TheNoble Gases are unstable
Atoms seek to completetheir outer energy level tobecome stable
To become stable, atomsneed to bond with otheratomsMetals w/ NonmetalsNonmetals w/ NonmetalsSame atom w/ same atom