Lewis Structure Flashcards
symbols of lewis structures
dots
symbol used to indicate a shared pair of electrons
dash or line
electrons that are not used in bonding
lone pairs
single shared pair of electrons
single bond
the main group of atoms has to form enough bonds to obtain 8 valence electrons
octet rule
formed when two pairs of electrons are shared between a pair of atoms
double bond
formed when three electron pairs are shared by a pair of atoms
triple bond
first rule of the lewis structure
determine the total number of valence electrons
second rule of the lewis structure
draw a skeletal structure of the molecule, arranging the atoms around a cetnral atom
third rule of the lewis structure
distribute the remaining electrons as lone pairs on the terminal atoms (EXCEPT HYDROGEN)
fourth rule of the lewis structure
distribute the remaining electrons as lone pairs on the terminal atoms
elements that only need 2 atoms to achieve balance
hydrogen and helium
fifth rule of the lewis electron
- Rearrange the electrons of the outer atoms to make multiple bonds with the central atom in order to obtain octets wherever possible.
can hydrogen be a central atom?
no.