硒嘅同位素

硒有39個同位素，其中5個係穩定嘅。

圖表

符號	Z（p）	N（n）	質量（u）	半衰期	原子核自旋	相對豐度	相對豐度嘅變化率
	激發能量
65Se	34	31	64.96466(64)#	<50 ms	3/2-#
66Se	34	32	65.95521(32)#	33(12) ms	0+
67Se	34	33	66.95009(21)#	133(11) ms	5/2-#
68Se	34	34	67.94180(4)	35.5(7) s	0+
69Se	34	35	68.93956(4)	27.4(2) s	(1/2-)
69m1Se	39.4(1) keV			2.0(2) µs	5/2-
69m2Se	573.9(10) keV			955(16) ns	9/2+
70Se	34	36	69.93339(7)	41.1(3) min	0+
71Se	34	37	70.93224(3)	4.74(5) min	5/2-
71m1Se	48.79(5) keV			5.6(7) µs	1/2- to 9/2-
71m2Se	260.48(10) keV			19.0(5) µs	(9/2)+
72Se	34	38	71.927112(13)	8.40(8) d	0+
73Se	34	39	72.926765(11)	7.15(8) h	9/2+
73mSe	25.71(4) keV			39.8(13) min	3/2-
74Se	34	40	73.9224764(18)	穩定	0+	0.0089(4)
75Se	34	41	74.9225234(18)	119.779(4) d	5/2+
76Se	34	42	75.9192136(18)	穩定	0+	0.0937(29)
77Se	34	43	76.9199140(18)	穩定	1/2-	0.0763(16)
77mSe	161.9223(7) keV			17.36(5) s	7/2+
78Se	34	44	77.9173091(18)	穩定	0+	0.2377(28)
79Se	34	45	78.9184991(18)	2.95(38)E+5 a	7/2+
79mSe	95.77(3) keV			3.92(1) min	1/2-
80Se	34	46	79.9165213(21)	穩定	0+	0.4961(41)
81Se	34	47	80.9179925(22)	18.45(12) min	1/2-
81mSe	102.99(6) keV			57.28(2) min	7/2+
82Se	34	48	81.9166994(22)	97(5)E+18 a	0+	0.0873(22)
83Se	34	49	82.919118(4)	22.3(3) min	9/2+
83mSe	228.50(20) keV			70.1(4) s	1/2-
84Se	34	50	83.918462(16)	3.1(1) min	0+
85Se	34	51	84.92225(3)	31.7(9) s	(5/2+)#
86Se	34	52	85.924272(17)	15.3(9) s	0+
87Se	34	53	86.92852(4)	5.50(12) s	(5/2+)#
88Se	34	54	87.93142(5)	1.53(6) s	0+
89Se	34	55	88.93645(32)#	0.41(4) s	(5/2+)#
90Se	34	56	89.93996(43)#	300# ms [>300 ns]	0+
91Se	34	57	90.94596(54)#	270(50) ms	1/2+#
92Se	34	58	91.94992(64)#	100# ms [>300 ns]	0+
93Se	34	59	92.95629(86)#	50# ms [>300 ns]	1/2+#
94Se	34	60	93.96049(86)#	20# ms [>300 ns]	0+

備註：畫上#號嘅數據代表冇經過實驗嘅證明，只係理論推測，而用咗括號括係代表數據唔確定。

參攷

• Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
• Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
• Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
  • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
  • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
  • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

←	同位素一覽	→
砷嘅同位素	硒嘅同位素	溴嘅同位素