 |
Manganese |
---|
Pípè | /ˈmæŋɡəniːz/ (MANG-gə-neez) |
---|
Ìhànsójú | silvery metallic |
---|
Ìwúwo átọ̀mù Ar, std(Mn) | 54.938043(2)[1] |
---|
Manganese ní orí tábìlì àyè |
---|
|
Nọ́mbà átọ̀mù (Z) | 25 |
---|
Ẹgbẹ́ | group 7 |
---|
Àyè | àyè 4 |
---|
Àdìpọ̀ | Àdìpọ̀-d |
---|
Ẹ̀ka ẹ́límẹ́ntì | Transition metal |
---|
Ìtò ẹ̀lẹ́ktrọ́nù | [Ar] 3d5 4s2 |
---|
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 13, 2 |
---|
Àwọn ohun ìní ara |
---|
Ìfarahàn at STP | solid |
---|
Ìgbà ìyọ́ | 1519 K (1246 °C, 2275 °F) |
---|
Ígbà ìhó | 2334 K (2061 °C, 3742 °F) |
---|
Kíki (near r.t.) | 7.21 g/cm3 |
---|
when liquid (at m.p.) | 5.95 g/cm3 |
---|
Heat of fusion | 12.91 kJ/mol |
---|
Heat of | 221 kJ/mol |
---|
Molar heat capacity | 26.32 J/(mol·K) |
---|
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 | −3, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
---|
Electronegativity | Pauling scale: 1.55 |
---|
energies | |
---|
Atomic radius | empirical: 127 pm |
---|
Covalent radius | 139±5 (low spin), 161±8 (high spin) pm |
---|
Spectral lines of manganese |
Other properties |
---|
Natural occurrence | primordial |
---|
Crystal structure | (bcc) |
---|
Speed of sound thin rod | 5150 m/s (at 20 °C) |
---|
Thermal expansion | 21.7 µm/(m·K) (at 25 °C) |
---|
Thermal conductivity | 7.81 W/(m·K) |
---|
Electrical resistivity | 1.44 µ Ω·m (at 20 °C) |
---|
Magnetic ordering | paramagnetic |
---|
Young's modulus | 198 GPa |
---|
Bulk modulus | 120 GPa |
---|
Mohs hardness | 6.0 |
---|
Brinell hardness | 196 MPa |
---|
CAS Number | 7439-96-5 |
---|
Main isotopes of manganese |
---|
|
Àdàkọ:Category-inline | references |