Magnésíọ̀mù (pípè /mæɡˈniːziəm/ , mag-NEE -zee-əm ) je apilese kemika pelu ami-idamo Mg , nomba atomu 12 ati nomba isodoksijini wiwopo +2. O je onide alkalini inu ile ati apilese pipo repete julo kejo ninu igbele Aye, ninbi to ti je bi 2% fun iposi,[2] ati ikesan ni gbogbo Agbalaaye ti a mo.[3] [4]
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Magnésíọ̀mù, 12 Mg Magnésíọ̀mù Pípè / m æ ɡ ˈ n iː z i ə m / (mag-NEE -zee-əm ) Ìhànsójú shiny grey solid Ìwúwo átọ̀mù A r, std (Mg)[24.304 , 24.307 ] conventional: 24.305 Magnésíọ̀mù ní orí tábìlì àyè
Nọ́mbà átọ̀mù (Z ) 12 Ẹgbẹ́ group 2 (alkaline earth metals) Àyè àyè 3 Àdìpọ̀ Àdìpọ̀-s Ẹ̀ka ẹ́límẹ́ntì Alkaline earth metal Ìtò ẹ̀lẹ́ktrọ́nù [ Ne ] 3s2 Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan 2, 8, 2 Àwọn ohun ìní ara Ìfarahàn at STP solid Ìgbà ìyọ́ 923 K (650 °C, 1202 °F) Ígbà ìhó 1363 K (1091 °C, 1994 °F) Kíki (near r.t. ) 1.738 g/cm3 when liquid (at m.p. ) 1.584 g/cm3 Heat of fusion 8.48 kJ/mol Heat of 128 kJ/mol Molar heat capacity 24.869 J/(mol·K) pressure
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
701
773
861
971
1132
1361
Atomic properties Oxidation states +1,[1] +2 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment Electronegativity Pauling scale: 1.31 energies Atomic radius empirical: 160 pm Covalent radius 141±7 pm Van der Waals radius 173 pm Color lines in a spectral range Spectral lines of magnésíọ̀mùOther properties Natural occurrence primordial Crystal structure hexagonal close-packed (hcp)Speed of sound thin rod (annealed) 4940 m/s (at r.t. ) Thermal expansion 24.8 µm/(m·K) (at 25 °C) Thermal conductivity 156 W/(m·K) Electrical resistivity 43.9 n Ω·m (at 20 °C) Magnetic ordering paramagnetic Young's modulus 45 GPa Shear modulus 17 GPa Bulk modulus 45 GPa Poisson ratio 0.290 Mohs hardness 2.5 Brinell hardness 260 MPa CAS Number 7439-95-4 History Discovery Joseph Black (1755)First isolation Humphry Davy (1808)Main isotopes of magnésíọ̀mù
Iso tope
Abun dance
Half-life (t 1/2 )
Decay mode
Pro duct
24 Mg
78.99%
24 Mg is stable with 12 neutrons
25 Mg
10.00%
25 Mg is stable with 13 neutrons
26 Mg
11.01%
26 Mg is stable with 14 neutrons
Àdàkọ:Category-inline | references
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Housecroft, Catherine E; Sharpe, Alan G. (2007). "Group 2 metals". Inorganic Chemistry (3 ed.). Harlow, England: Pearson. ISBN 9780131755536 .