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5.01 Electrons and Bonding
Electrons and bonding vocabulary
9
Chemistry
9th Grade
07/16/2019

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Term
electron
Definition
Negatively charged subatomic particle located outside the nucleus of the atom
Term
valence electrons
Definition
Electrons which are found in the outermost energy levels, furthest from the nucleus of the atom

These electrons influence bonding and reactions
Term
octet rule
Definition
All atoms want to have 8 valence electrons

They will gain or lost electrons to get to that full shell of 8 valence electrons
Term
periodic table
Definition
All known elements displayed in order of atomic number
Term
column
Definition
Vertical

Up and down
Term
group
Definition
All of the elements in a column of the periodic table

Columns are vertical (up and down)
Term
cation
Definition
An atom which has lost electrons so that it has a positive charge
Term
anion
Definition
An atom that has gained electrons so that it has a negative charge
Term
Lewis structure
Definition
Atomic symbol of an element surrounded by valence electrons

Also called electron-dot diagrams
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