Mendeleev's Periodic Table > Sb - Antimony

Sb - Antimony

Metallic antimony is an extremely brittle metal of a flaky, crystalline texture. It is bluish white and has a metallic lustre. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes. It is a poor conductor of heat and electricity. Antimony and its compounds are toxic. It is found mostly with other minerals and in stibnite.

Atomic number	-	51		Density	g/mL	6	.68
Atomic weight	u	121	.75	Melting point	K	904
Bonding radius	A	1	.4	Boiling point	K	1860
Atomic radius	A	1	.53	Heat of vaporization	kJ/mol	77	.14
Ionization Potential	V	8	.641	Heat of fusion	kJ/mol	19	.87
Electronegativity	-	2	.05	Specific heat	J/gK	0	.21
The oxide is mildly acidic.				Crystal are rhombohedral.
Electron config. : [Kr] 4d¹⁰ 5s²5p³

Isotopes of Sb (Antimony):

MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	104 0.52 sec EC,12.200 MeV Sn-104 103.93633	105 1.3 sec EC,3.450 MeV Sn-105 104.93140	107 a/EC,7.900 In-103/Sn-107 106.92410	108 7.0 sec EC,9.510 MeV Sn-108 107.92215
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	109 17.0 sec EC,6.380 MeV Sn-109 108.91813	110 23.0 sec EC,8.300 MeV Sn-110 109.91676	111 75 sec EC,5.100 MeV Sn-111 110.91321	112 51.4 sec EC,7.055 MeV Sn-112 111.91239
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	113 6.67 min EC,3.905 MeV Sn-113 112.90936	114 3.49 min EC,5.880 MeV Sn-114 113.90909	115 32.1 min EC,3.030 MeV Sn-115 114.90659	116 15.8 min EC,4.707 MeV Sn-116 115.90679
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	117 2.80 hr EC,1.757 MeV Sn-117 116.90484	118 3.6 min EC,3.657 MeV Sn-118 117.90553	119 38.19 hr EC,2.675 MeV Sn-119 118.90394	120 15.89 min EC,2.681 MeV Sn-120 119.90507
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	120a 5.76 da EC,2.681 MeV Sn-120 119.90507	121 57.21% Stable 120.90382	122 2.7238 da B-/EC,1.979 Te-122/Sn-122 121.90517	123 42.79% Stable 122.90421
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	124 60.20 da B-,2.905 MeV Te-124 123.90593	124a 93 sec B-,2.916 MeV Te-124 123.90594	125 2.7582 yr B-,2.392 MeV Te-125 124.90524	126 12.46 da B-,3.670 MeV Te-126 125.90724
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	126a 19.15 min B-,3.688 MeV Te-126 125.90726	127 3.85 da B-,1.581 MeV Te-127 126.90691	128 9.01 hr B-,4.380 MeV Te-128 127.90916	129 4.40 hr B-,2.380 MeV Te-129 128.90915
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	130 39.5 min B-,4.960 MeV Te-130 129.91155	131 23.03 min B-,3.190 MeV Te-131 130.91194	132 2.79 min B-,5.290 MeV Te-132 131.91420	133 2.5 min B-,4.003 MeV Te-133 132.91523
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	134 0.78 sec B-/B-n,8.420 Te-134/Te-133 133.92057	135 1.662 sec B-/B-n,8.120 Te-135/Te-134 134.92516	136 0.82 sec B-/B-n,9.300 Te-136/Te-135 135.93011

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