Lewis Diagrams Flashcards
ROT for C atoms
Always form 4 covalent bonds
ROT for O atoms
Always form 2 covalent bonds
ROT for N atoms
Always form 3 covalent bonds
Rest of atoms?
Always form single covalent bonds
1st step for drawing Lewis diagrams
Count the number of valence electrons available for bonding
2nd step for drawing Lewis diagrams
Bond the central atom to the neighboring atom with a pair of electrons
3rd step for drawing Lewis diagrams
Add pairs of electrons to neighboring atoms to fulfill the octet rule
4th step for drawing Lewis diagrams
Place any remaining electrons on central atoms
5th step for drawing Lewis diagrams
Shift non-bonded pairs to bond sites to attain octet rule
What is the Octet Rule?
Atoms want to have 8 electrons in their valence shell to be stable. There should be 8 electrons around each atom. The exception is hydrogen which only needs 2 atoms.
What is a Lewis diagram of CO2?
C=4 ::O=C=O::
O=6x2
=16 electrons