Br - Bromine

The liquid halogen bromine was extracted from seawater in 1826 by Antoine Jèrôme Balard.

Atomic number - 35 Density g/mL 3 .12

Atomic weight u 79 .904 Melting point K 265 .9

Bonding radius A 1 .14 Boiling point K 332 .25

Atomic radius A 1 .12 Heat of vaporization kJ/mol 15 .438

Ionization Potential V 11 .814 Heat of fusion kJ/mol 5 .286

Electronegativity - 2 .96 Specific heat J/gK 0 .473

The oxide is a strong acid.
Crystal are orthorhombic.

Electron config. : [Ar] 3d¹⁰ 4s² 4p⁵

Isotopes of Br: Click mass number for decay process, product for element page.

069
100 nsec
p,3.390 MeV
Se-68
68.949865 070
79.1 msec
EC,10.400 MeV
Se-70
69.944605 070a
2.2 sec
EC,10.400 MeV
Se-70
69.944605 071
21.4 sec
EC,6.500 MeV
Se-71
70.939237 072
78.6 sec
EC,8.700 MeV
Se-72
71.936446 073
3.4 min
EC,4.660 MeV
Se-73
72.931765 074
25.4 min
EC,6.907 MeV
Se-74
73.929891

075
96.7 min
EC,3.030 MeV
Se-75
74.925776 076
16.2 hr
EC,4.963 MeV
Se-76
75.924542 076a
1.31 sec
EC,5.066 MeV
Se-76
75.924652 077
57.036 hr
EC,1.365 MeV
Se-77
76.921380 078
6.46 min
B-/EC,3.574
Kr-78/Se-78
77.921146 079 50.69%

Stable

78.918337 080
17.68 min
B-/EC,2.004
Kr-80/Se-80
79.918530

081 49.31%

Stable

80.916291 082
35.30 hr
B-,3.093 MeV
Kr-82
81.916804 083
2.40 hr
B-,3.896 MeV
Kr-83
82.915181 084
31.80 min
B-,4.650 MeV
Kr-84
83.916499 085
2.90 min
B-,2.870 MeV
Kr-85
84.915610 086
55.1 sec
B-,7.626 MeV
Kr-86
85.918802 087
55.60 sec
B-/B-n,6.853
Kr-87/Kr-86
86.920715

088
16.34 sec
B-/B-n,8.960
Kr-88/Kr-87
87.924068 089
4.40 sec
B-/B-n,8.160
Kr-89/Kr-88
88.926397 090
1.92 sec
B-/B-n,10.350
Kr-90/Kr-89
89.930638 091
0.541 sec
B-/B-n,9.800
Kr-91/Kr-90
90.933923 092
0.343 sec
B-/B-n,12.200
Kr-92/Kr-91
91.939215 093
102 msec
B-/B-n,11.000
Kr-93/Kr-92
92.943102 094
70 msec
B-/B-n,2.680
Kr-94/Kr-93
93.947585

MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Atomic number	-	35		Density	g/mL	3	.12
Atomic weight	u	79	.904	Melting point	K	265	.9
Bonding radius	A	1	.14	Boiling point	K	332	.25
Atomic radius	A	1	.12	Heat of vaporization	kJ/mol	15	.438
Ionization Potential	V	11	.814	Heat of fusion	kJ/mol	5	.286
Electronegativity	-	2	.96	Specific heat	J/gK	0	.473
The oxide is a strong acid.				Crystal are orthorhombic.
Electron config. : [Ar] 3d¹⁰ 4s² 4p⁵

069 100 nsec p,3.390 MeV Se-68 68.949865	070 79.1 msec EC,10.400 MeV Se-70 69.944605	070a 2.2 sec EC,10.400 MeV Se-70 69.944605	071 21.4 sec EC,6.500 MeV Se-71 70.939237	072 78.6 sec EC,8.700 MeV Se-72 71.936446	073 3.4 min EC,4.660 MeV Se-73 72.931765	074 25.4 min EC,6.907 MeV Se-74 73.929891
075 96.7 min EC,3.030 MeV Se-75 74.925776	076 16.2 hr EC,4.963 MeV Se-76 75.924542	076a 1.31 sec EC,5.066 MeV Se-76 75.924652	077 57.036 hr EC,1.365 MeV Se-77 76.921380	078 6.46 min B-/EC,3.574 Kr-78/Se-78 77.921146	079 50.69% Stable 78.918337	080 17.68 min B-/EC,2.004 Kr-80/Se-80 79.918530
081 49.31% Stable 80.916291	082 35.30 hr B-,3.093 MeV Kr-82 81.916804	083 2.40 hr B-,3.896 MeV Kr-83 82.915181	084 31.80 min B-,4.650 MeV Kr-84 83.916499	085 2.90 min B-,2.870 MeV Kr-85 84.915610	086 55.1 sec B-,7.626 MeV Kr-86 85.918802	087 55.60 sec B-/B-n,6.853 Kr-87/Kr-86 86.920715
088 16.34 sec B-/B-n,8.960 Kr-88/Kr-87 87.924068	089 4.40 sec B-/B-n,8.160 Kr-89/Kr-88 88.926397	090 1.92 sec B-/B-n,10.350 Kr-90/Kr-89 89.930638	091 0.541 sec B-/B-n,9.800 Kr-91/Kr-90 90.933923	092 0.343 sec B-/B-n,12.200 Kr-92/Kr-91 91.939215	093 102 msec B-/B-n,11.000 Kr-93/Kr-92 92.943102	094 70 msec B-/B-n,2.680 Kr-94/Kr-93 93.947585
MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass