P (Phosphorus) is an element with position number 15 in the periodic table.
Located in the III period. Melting point: 44 ℃. Density: 1.82 g/cm3.
Electronic configuration of the Phosphorus atom: 1s2 2s2 2p6 3s2 3p3
Reduced electronic configuration P: [Ne] 3s2 3p3
Below is the electronic diagram of the Phosphorus atom
Distribution of electrons over energy levels in the P atom 1-st level (K): 2 2-st level (L): 8 3-st level (M): 5
Valence electrons of Phosphorus
The number of valence electrons in a Phosphorus atom - 5.
Below are their quantum numbers (N - energy, L - angular momentum, M - magnetic moment, S - spin )
Orbital
N
L
M
S
s
3
0
0
+1/2
s
3
0
0
-1/2
p
3
1
-1
+1/2
p
3
1
0
+1/2
p
3
1
1
+1/2
Oxidation states of Phosphorus: -3, -2, -1, +1, +2, +3, +4, +5