1. Lub cev lub cev
Tsos thiab duab
Daim ntawv nplaum lossis cov ntawv hlau dawb lossis phaj, saum npoo muaj cov xim hlau luster.
Brittle, siab tawv (Mohs hardness li 5 ~ 6), tsis zoo ductility, yooj yim tawg thaum ua.
Ntom ntom thiab melting point
Ntawj ntom:7.2 ~ 7.4 g / cm³(Kaw rau ntom ntawm hlau, tab sis hnyav dua txhuas).
Melting taw tes:1244 Qib, Tswb taw tes txog xyoo 1962 degree, hloov chaw ntawm qhov kub siab.
Conductivity thiab Magnetism
Zoo hluav taws xob conductivity (conductivity txog7.8×10⁶ S/m), tab sis qis dua li tus tooj liab thiab txhuas.
Paramagetic, tab sis cov khoom sib nqus tsis muaj zog, tsis haum rau cov ntaub ntawv sib nqus muaj zog.
Crystal Qauv
A cubic crystal system (α-Mn), a complex cubic structure at room temperature, at high temperature (>727 degree) hloov mus rau hauv tus qauv sau ntawv hauv lub cev hauv lub cev (-MN).
2. Tshuaj lom neeg
(1) oxidation cov tshuaj tiv thaiv
Oxidation ntawm chav tsev kub:
Ib zaj yeeb yaj kiab xim av oxide (mnoos lossis mn₃o₄) cov ntaub ntawv nyob rau saum npoo hauv huab cua noo, cov kev sib npaug ntawm cov sib npaug:
2Mn {{{{{}}} → 2mno2 oxide zaj duab xis tseem nta thiab qeeb qeeb ntawm kev ua yeeb yam ntawm Lamellar qauv.
Kub Oxidation:
Thaum rhuab saum toj 500 degree, oxidation sai tshwm sim los ua mn₃o₄ lossis mno:
3mn {+2 o2Δmn3o4
(2) cov tshuaj tiv thaiv nrog cov kua qaub
Dilute acids:
Yooj yim soluble hauv dilute sulphuric thiab hydrochloric acids, tso hydrogen thiab ua ib qho kev daws teeb meem ntawm mn²⁺:
MN + H2SO4 → mnso {3}} h2} h2} h2} h2} H2} H2} H2} H2} H2} Qhov kev siv tshuaj tiv thaiv ntawm cov kua qaub yuav tsum tau tswj (kom tsis txhob passivation los ntawm concentrated acid).
Cov kua qaub:
Cov tshuaj tiv thaiv nres hauv concentrated sulfuric acid los yog concentrated nitric kua qaub vim passivation (tsim ntawm ib tug oxide zaj duab xis nyob rau saum npoo).
(3) cov tshuaj tiv thaiv nrog alkali
Nws tsis muaj kev cuam tshuam nrog cov khoom muaj zog muaj zog (piv txwv li, NAOH) ntawm chav sov, tab sis yuav cuam tshuam maj mam rau mANANATES:
2mn {{+4 nao +3} o2Δ2na2mno2mno2mno {6} h2o
(4) lwm yam kev tawm tsam
Reacts nrog halogens: Thaum rhuab,
Nws nthuav tawm kev sib raug zoo nrog Clj thiab Br₂ los ua manganese haldides (piv txwv li mncl₂).
Cov tshuaj tiv thaiv nrog leej faj: Thaum kub siab,
Manganese sulfide (MNS) yog tsim, uas yog siv rau qhov desulphurization ntawm hlau thiab hlau:
Mn + sΔmns
Txo cov khoom:
Ua raws li tus neeg saib xyuas muaj zog, tsis muaj hlau
