Answer:
I'm assuming you have to do the same thing for all three models given
1st model
Fraction: 
Decimal: 0.16
Percent: 16%
2nd model
Fraction: 
Decimal: 0.666
Percent: 66.666%
3rd model
Fraction: 
Decimal: 0.40
Percent: 40%
Explanation:
The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table.
...
ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.
Name Atomic Number Electron Configuration
Argon 18 1s2 2s22p63s23p6
Period 4
Potassium 19 1s2 2s22p63s23p64s1
Calcium 20 1s2 2s22p63s23p64s2
Answer:
has a way of regenerating itself
Explanation: