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manganese
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Mangan

kromium ← mangan → besi
-
↑
Mn
↓
Tc
Penampilan
perak metalik
A rough fragment of lustrous silvery metal
Ciri-ciri umum
Nama, lambang, Nomor atommangan, Mn, 25
Dibaca/ˈmæŋɡəniːz/ MANG-gən-neez
Jenis unsurlogam transisi
Golongan, periode, blok7, 4, d
Massa atom standar54.938045(5)
Konfigurasi elektron[Ar] 4s2 3d5
2, 8, 13, 2
Kulit elektron dari mangan (2, 8, 13, 2)
Sifat fisika
Fasesolid
Massa jenis (mendekati suhu kamar)7.21 g·cm−3
Massa jenis air pada t.l.5.95 g·cm−3
Titik lebur1519 K, 1246 °C, 2275 °F
Titik didih2334 K, 2061 °C, 3742 °F
Kalor peleburan12.91 kJ·mol−1
Kalor penguapan221 kJ·mol−1
Kapasitas kalor26.32 J·mol−1·K−1
Tekanan uap
P (Pa)1101001 k10 k100 k
at T (K)122813471493169119552333
Sifat atom
Bilangan oksidasi7, 6, 5, 4, 3, 2, 1, -1, -2, -3
(oksida amfoter)
Elektronegativitas1.55 (skala Pauling)
Energi ionisasi
(lebih lanjut)		pertama: 717.3 kJ·mol−1
ke-2: 1509.0 kJ·mol−1
ke-3: 3248 kJ·mol−1
Jari-jari atom127 pm
Jari-jari kovalen139±5 (low spin), 161±8 (high spin) pm
Lain-lain
Susunan kristalbody-centered cubic
Pembenahan magnetikparamagnetic
Keterhambatan elektris(20 °C) 1.44 µΩ·m
Konduktivitas termal7.81 W·m−1·K−1
Ekspansi termal(25 °C) 21.7 µm·m−1·K−1
Kecepatan suara (batang ringan)(20 °C) 5150 m·s−1
Modulus Young198 GPa
Bulk modulus120 GPa
Kekerasan Mohs6.0
Kekerasan Brinell196 MPa
Nomor CAS7439-96-5
Isotop paling stabil
Artikel utama: Isotop dari mangan
isoNAWaktu paruhDMDE (MeV)DP
52Mnsyn5.591 dε-52Cr
β+0.57552Cr
γ0.7, 0.9, 1.4-
53Mnsisa3.74 ×106 yε-53Cr
54Mnsyn312.3 dε1.37754Cr
γ0.834-
55Mn100%Mn stabil dengan 30 neutron
· r


Mangan yaitu unsur kimia dalam tabel periodik yang memiliki lambang Mn dan nomor atom 25.

Referensi

 
 


Sumber :
wiki.edunitas.com, id.wikipedia.org, m.andrafarm.com, pasar.andrafarm.com, dan lain-lain.



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