Mendeleev's Periodic Table > Rh - Rhodium

Rh - Rhodium

Rhodium is a transition element and was discovered in 1803 by Wollaston in London. Rhodium metal is silvery white. It has a high reflectance and is hard and durable. Upon heating it turns to the oxide when red and at higher temperatures turns back to the element. Rodhium is a major component of industrial catalytic systems.

Ruthenium, rhodium, palladium, osmium, iridium, and platinum together make up a group of elements referred to as the platinum group metals (PGM).

Atomic number	-	45		Density	g/mL	12	.4
Atomic weight	u	102	.9055	Melting point	K	2236
Bonding radius	A	1	.25	Boiling point	K	3970
Atomic radius	A	1	.83	Heat of vaporization	kJ/mol	493
Ionization Potential	V	7	.46	Heat of fusion	kJ/mol	21	.5
Electronegativity	-	2	.28	Specific heat	J/gK	0	.242
The oxide is amphoteric.				Crystal are face centered cubic.
Electron config. : [Kr] 4d⁸ 5s¹

Isotopes of Rh (Rhodium):

MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	093 EC,8.100 MeV Ru-93 92.925710	094 25.8 sec EC,9.600 MeV Ru-94 93.921738	095 5.02 min EC,5.110 MeV Ru-95 94.915898	096 9.90 min EC,6.446 MeV Ru-96 95.914524
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	097 30.7 min EC,3.520 MeV Ru-97 96.911346	098 8.7 min EC,5.057 MeV Ru-98 97.910716	099 16.1 da EC,2.103 MeV Ru-99 98.908195	100 20.8 hr EC,3.630 MeV Ru-100 99.908115
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	101 3.3 yr EC,1.614 MeV Ru-101 100.90616	101a 4.34 da EC,1.614 MeV Ru-101 100.90633	102 207 da B-/EC,2.323 Pd-102/Ru-102 101.90684	102a 2.9 yr EC,2.464 MeV Ru-102 101.90699
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	103 100% Stable 102.90550	104 42.3 sec B-/EC,2.441 Pd-104/Ru-104 103.90665	105 35.36 hr B-,1.917 MeV Pd-105 104.90569	106 29.80 sec B-,3.541 MeV Pd-106 105.90728
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	107 21.7 min B-,1.511 MeV Pd-107 106.90675	108 16.8 sec B-,4.510 MeV Pd-108 107.90872	109 80 sec B-,2.591 MeV Pd-109 108.90873	110 3.2 sec B-,5.400 MeV Pd-110 109.91094
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	111 11 sec B-,3.740 MeV Pd-111 110.91165	112 2.1 sec B-,6.800 MeV Pd-112 111.91465	113 2.80 sec B-,4.900 MeV Pd-113 112.91540	114 1.85 sec B-,7.900 MeV Pd-114 113.91884
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	115 0.99 sec B-,6.000 MeV Pd-115 114.92012	116 0.68 sec B-,8.900 MeV Pd-116 115.92367	117 0.44 sec B-,7.000 MeV Pd-117 116.92538

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