Manganisi

Manganese
25Mn
- ↑ Mn ↓ Tc Tábìlì ìdásìkò chromium ← manganese → iron
Ìhànsójú
silvery metallic
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà	manganese, Mn, 25
Ẹ̀ka ẹ́límẹ̀nti	transition metal
Ẹgbẹ́, àsìkò, àdìpò	7, 4, d
Ìwúwo átọ́mù	54.938045(5)
Ìtòléra ẹ̀lẹ́ktrónì	[Ar] 4s2 3d5 2, 8, 13, 2
Physical properties
Phase	solid
Density (near r.t.)	7.21 g·cm−3
Liquid density at m.p.	5.95 g·cm−3
Melting point	1519 K, 1246 °C, 2275 °F
Boiling point	2334 K, 2061 °C, 3742 °F
Heat of fusion	12.91 kJ·mol−1
Heat of vaporization	221 kJ·mol−1
Molar heat capacity	26.32 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1228 1347 1493 1691 1955 2333
Atomic properties
Oxidation states	7, 6, 5, 4, 3, 2, 1, -1, -2, -3 (oxides: acidic, basic or amphoteric depending on the oxidation state)
Electronegativity	1.55 (Pauling scale)
Ionization energies (more)	1st: 717.3 kJ·mol−1
	2nd: 1509.0 kJ·mol−1
	3rd: 3248 kJ·mol−1
Atomic radius	127 pm
Covalent radius	139±5 (low spin), 161±8 (high spin) pm
Miscellanea
Crystal structure	body-centered cubic
Magnetic ordering	paramagnetic
Electrical resistivity	(20 °C) 1.44 µΩ·m
Thermal conductivity	7.81 W·m−1·K−1
Thermal expansion	(25 °C) 21.7 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 5150 m·s−1
Young's modulus	198 GPa
Bulk modulus	120 GPa
Mohs hardness	6.0
Brinell hardness	196 MPa
CAS registry number	7439-96-5
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù manganese
iso NA half-life DM DE (MeV) DP 52Mn syn 5.591 d ε - 52Cr β+ 0.575 52Cr γ 0.7, 0.9, 1.4 - 53Mn trace 3.74 ×106 y ε - 53Cr 54Mn syn 312.3 d ε 1.377 54Cr γ 0.834 - 55Mn 100% 55Mn is stable with 30 neutrons