Mendeleev's Periodic Table > Mg - Magnesium

Mg - Magnesium

A flammable and light weight alkaline earth metal. Joseph Black discovered the element in 1755 in Scotland, and Davy produced the pure metal with his electrolytic apperatus in 1808. Magnesium metal or its compounds are used in most of our classes. Industrially, magnesium is used extensively in lightweight alloys. Ions of magnesium are essential for most organisms.

Atomic number	-	12		Density	g/mL	1	.74
Atomic weight	u	24	.305	Melting point	K	922
Bonding radius	A	1	.36	Boiling point	K	1363
Atomic radius	A	1	.72	Heat of vaporization	kJ/mol	127	.4
Ionization Potential	V	7	.646	Heat of fusion	kJ/mol	8	.954
Electronegativity	-	1	.31	Specific heat	J/gK	1	.02
The oxide is a strong base.				Crystal are hexagonal.
Electron config. : [Ne] 3s²

Isotopes of Mg (Magnesium):

MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	020 95 msec EC/ECp,10.730 Na-20/Ne-19 20.018862	021 122 msec EC/ECp,13.096 Na-21/Ne-20 21.011714	022 3.857 sec EC,4.786 MeV Na-22 21.999574	023 11.317 sec EC,4.057 MeV Na-23 22.994124
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	024 78.99% Stable 23.985041	025 10.00% Stable 24.985837	026 11.01% Stable 25.982593	027 9.458 min B-,2.610 MeV Al-27 26.984340
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	028 20.91 hr B-,1.832 MeV Al-28 27.983876	029 1.30 sec B-,7.550 MeV Al-29 28.988556	030 335 msec B-,6.990 MeV Al-30 29.990466	031 230 msec B-/B-n,4.590 Al-31/Al-30 30.996543
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	032 120 msec B-/B-n,10.270 Al-32/Al-31 31.999141	033 90 msec B-/B-n,13.710 Al-33/Al-32 33.005582	034 20 msec B-/B-n,11.300 Al-34/Al-33 34.009125