 |
Sódíọ̀mù |
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Ìhànsójú | silvery white metallic |
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Ìwúwo átọ̀mù Ar, std(Na) | 22.98976928(2)[1] |
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Sódíọ̀mù ní orí tábìlì àyè |
---|
|
Nọ́mbà átọ̀mù (Z) | 11 |
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Ẹgbẹ́ | group 1: H and alkali metals |
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Àyè | àyè 3 |
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Àdìpọ̀ | Àdìpọ̀-s |
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Ẹ̀ka ẹ́límẹ́ntì | Alkali metal |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Ne] 3s1 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2,8,1 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | solid |
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Ìgbà ìyọ́ | 370.87 K (97.72 °C, 207.9 °F) |
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Ígbà ìhó | 1156 K (883 °C, 1621 °F) |
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Kíki (near r.t.) | 0.968 g/cm3 |
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when liquid (at m.p.) | 0.927 g/cm3 |
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Critical point | (extrapolated) 2573 K, 35 MPa |
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Heat of fusion | 2.60 kJ/mol |
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Heat of | 97.42 kJ/mol |
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Molar heat capacity | 28.230 J/(mol·K) |
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pressure
P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
---|
at T (K)
|
554
|
617
|
697
|
802
|
946
|
1153
|
---|
|
Atomic properties |
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Oxidation states | −1, +1 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 0.93 |
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energies | |
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Atomic radius | empirical: 186 pm |
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Covalent radius | 166±9 pm |
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Van der Waals radius | 227 pm |
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Spectral lines of sódíọ̀mù |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | (bcc) |
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Speed of sound thin rod | 3200 m/s (at 20 °C) |
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Thermal expansion | 71 µm/(m·K) (at 25 °C) |
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Thermal conductivity | 142 W/(m·K) |
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Electrical resistivity | 47.7 n Ω·m (at 20 °C) |
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Magnetic ordering | paramagnetic |
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Young's modulus | 10 GPa |
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Shear modulus | 3.3 GPa |
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Bulk modulus | 6.3 GPa |
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Mohs hardness | 0.5 |
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Brinell hardness | 0.69 MPa |
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CAS Number | 7440-23-5 |
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History |
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Discovery | Humphry Davy (1807) |
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First isolation | Humphry Davy (1807) |
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Main isotopes of sódíọ̀mù |
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|
Àdàkọ:Category-inline | references |