Phosphorus/Isotopes

There are twenty three known isotopes of phosphorus.

Isotope Half-life Abundance or Decay Mode

Isotope	Half-life	spin	Abundance or Decay
24P
25P
26P	20 ms	(3+)	%EC+%B+=100, %ECP+%EC2P ~ 1.9
27P	260 ms	1/2+	%EC+%B+=100, %EC+%B+=100, %ECP ~ 0.05
28P	270.3 ms	3+	%EC+%B+=100, %ECP=0.0013 4, %ECA=0.00086 25
29P	4.140 s	1/2+	%EC+%B+=100
30P	2.498 m	1+	%EC+%B+=100
31P	stable	1/2+	%Abundance=100
32P	14.262 d	1+	%B-=100
33P	25.34 d	1/2+	%B-=100

• 34P 12.43 s 1+ %B-=100
• 35P 47.3 s 1/2+ %B-=100
• 36P 5.6 s %B-=100
• 37P 2.31 s %B-=100
• 38P 0.64 s %B-=100, %B-N < 10
• 39P 0.16 s %B-=100, %B-N=41 24
• 40P 260 ms %B-=100, %B-N=30 10
• 41P 120 ms %B-=100, %B-N=30 10
• 42P 110 ms %B-=100, %B-N=50 20
• 43P 33 ms %B-=100, %B-N=100
• 44P
• 45P
• 46P