O - Oxygen

Oxygen gas was discovered by Swedish pharmacist, Karl Scheele in 1771. Comprising 87 percent of the oceans, one fifth of the atmosphere and six out of ten atoms on the crust, oxygen is the most abundant element on the surface of the earth.

Atomic number - 8 Density g/mL 0 .0001429

Atomic weight u 15 .9994 Melting point K 50 .35

Bonding radius A 0 .73 Boiling point K 90 .18

Atomic radius A 0 .65 Heat of vaporization kJ/mol 3 .4099

Ionization Potential V 13 .618 Heat of fusion kJ/mol 0 .22259

Electronegativity - 3 .44 Specific heat J/gK 0 .92

The oxide is neutral.
Crystal are cubic.

Electron config. : 1s² 2s² 2p⁴

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

012 0.40 MeV p,17.338 MeV N-11 12.034417	013 8.58 msec EC,17.765 MeV N-13 13.024810	014 70.606 sec EC,5.143 MeV N-14 14.008595	015 122.24 sec EC,2.754 MeV N-15 15.003065	016 99.762% Stable 15.994914	017 0.038% Stable 16.999131	018 0.200% Stable 17.999160
019 26.91 sec B-,4.821 MeV F-19 19.003579	020 13.51 sec B-,3.814 MeV F-20 20.004076	021 3.42 sec B-,8.109 MeV F-21 21.008654	022 2.25 sec B-,6.490 MeV F-22 22.009962	023 82 msec B-/B-n,11.290 F-23/F-22 23.015695	024 61 msec B-/B-n,11.400 F-24/F-23 24.020397
MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass

Atomic number	-	8		Density	g/mL	0	.0001429
Atomic weight	u	15	.9994	Melting point	K	50	.35
Bonding radius	A	0	.73	Boiling point	K	90	.18
Atomic radius	A	0	.65	Heat of vaporization	kJ/mol	3	.4099
Ionization Potential	V	13	.618	Heat of fusion	kJ/mol	0	.22259
Electronegativity	-	3	.44	Specific heat	J/gK	0	.92
The oxide is neutral.				Crystal are cubic.
Electron config. : 1s² 2s² 2p⁴