Ra - Radium

	Atomic number	-	88			Density	g/mL	5
	Atomic weight	u	226	.0254		Melting point	K	973
	Bonding radius	A	-			Boiling point	K	1809
	Atomic radius	A	-			Heat of vaporization	kJ/mol	-
	Ionization Potential	V	5	.279		Heat of fusion	kJ/mol	-
	Electronegativity	-	0	.9		Specific heat	J/gK	-
	The oxide is a strong base.					Crystal are body centered cubic.
	Electron config. : [Rn] 7s2
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Lr

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

204 45 msec a,7.650 MeV Rn-200 204.00644	205 0.22 sec a/EC,7.510 Rn-201/Fr-205 205.00619	206 0.24 sec a,7.416 MeV Rn-202 206.00378	207 1.3 sec a/EC,7.270 Rn-203/Fr-207 207.00375	207a 55 msec EC,6.870 MeV Fr-207 207.00418	208 1.3 sec a/EC,7.273 Rn-204/Fr-208 208.00177	209 4.6 sec a/EC,7.150 Rn-205/Fr-209 209.00194
210 3.7 sec a/EC,7.157 Rn-206/Fr-210 210.00045	211 13 sec a/EC,7.046 Rn-207/Fr-211 211.00089	212 13.0 sec a/EC,7.032 Rn-208/Fr-212 211.99978	213 2.74 min a/EC,6.859 Rn-209/Fr-213 213.00034	213a 2.1 msec a,8.629 MeV Rn-209 213.00224	214 2.46 sec a/EC,7.273 Rn-210/Fr-214 214.00009	215 1.59 msec a,8.864 MeV Rn-211 215.00270
216 182 nsec a/EC,9.308 Rn-212/Fr-216 216.00351	217 1.7 usec a,9.161 MeV Rn-213 217.00630	218 25.6 usec a,8.546 MeV Rn-214 218.00712	219 10 msec a,8.130 MeV Rn-215 219.01006	220 18 msec a,7.595 MeV Rn-216 220.01101	221 28 sec a,6.886 MeV Rn-217 221.01390	222 38.0 sec a,6.681 MeV Rn-218 222.01536
223 11.435 da a,5.979 MeV Rn-219 223.01849	224 3.66 da a,5.789 MeV Rn-220 224.02020	225 14.9 da B-,1.866 MeV Ac-225 225.02360	226 1600 yr a,4.871 MeV Rn-222 226.02540	227 42.2 min B-,1.325 MeV Ac-227 227.02916	228 5.75 yr B-,4.300 MeV Ac-228 228.03106	229 4.0 min B-,1.760 MeV Ac-229 229.03481
230 93 min B-,2.560 MeV Ac-230 230.03708	231 103 sec B-,7.175 MeV Ac-231 231.04139	232 250 sec B-,6.370 MeV Ac-232 232.04411	233 30 sec B-,7.100 MeV Ac-233 233.0	234 30 sec B-,6.420 MeV Ac-234 234.05152	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.