ELECTRONS IN ATOMS
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ELECTRON CONFIGURATION
Step 1:
identify how many electrons are in the atom
Step 2:
determine the energy level of the atom
Step 3:
determine the number of sub levels
Step 4:
Assign electrons to the sub level following the 3 rules
Step 5:
write the complete electron configuration
example:
Carbon has 6 electrons
1s22s22p2
STEPS TO DRAW ORBITAL NOTATION
- No two electrons can have the same four quantum numbers.
- to show different direction of spin is written as one arrow going up and one arrow going down
- electrons individually fill empty orbitals before pairing up