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Finding element? Ap chemistry?
If the following represents the last electron, what elements do the the following quantum number represent:
N= 3
I=1
ML= 0
Ms= +1/2
Next:
N= 4
l = 2
Ml= -2
Ms= -1/2
1 Answer
- IggyLv 78 years agoFavorite Answer
N = 1 => 2 electrons
N = 2 => 8 electrons
N = 3, L = 0 => 2 electrons
N = 3, L = 1 => 2 electrons (and you have both assuming Ms = -1/2 is there first)
The element with 14 electrons is silicon
Check - the last electron is 3p2 which matches silicon.
N = 1 => 2 electrons
N = 2 => 8 electrons
N = 3 => 18 electrons
N = 4, L = 0 => 2 electrons
N = 4, L = 1 => 6 electrons
N = 4, L = 2, Ml = -2, Ms = -1/2 => 1 electron
The element with 47 electrons in total is gold
Check - the last electron is 4d1 which would make this Y (Yttrium). I've made the error of assuming the electrons fill in exact quantum number sequence. Y(Yttrium) is correct not gold.
Enjoy :)
