osmium ← iridium → platina |
Rh ↑ Ir ↓ Mt |
|
|
Panampilan |
putih keperakan
|
Ciri-ciri umum |
Namo, lambang, Nomor atom |
iridium, Ir, 77 |
Disabuik |
/ɨˈrɪdiəm/
|
Jinih unsur |
logam transisi |
Golongan, pariode, blok |
9, 6, d |
Massa atom standar |
192.217 |
Konfigurasi elektron |
[Xe] 4f14 5d7 6s2 2, 8, 18, 32, 15, 2
|
Sipaik fisika |
Fase |
solid |
Masso jinih (mandokek-i suhu kamar) |
22.56 g·cm−3 |
Masso jinih caiaran pado t.l. |
19 g·cm−3 |
Titik lebur |
2739 K, 2466 °C, 4471 °F |
Titik didih |
4701 K, 4428 °C, 8002 °F |
Kalor palaburan |
41.12 kJ·mol−1 |
Kalor penguapan |
563 kJ·mol−1 |
Kapasitas kalor |
25.10 J·mol−1·K−1 |
Tokanan uap |
P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
at T (K) |
2713 |
2957 |
3252 |
3614 |
4069 |
4659 |
|
Sipaik atom |
Bilangan oksidasi |
−3,−1, 0, 1, 2, 3, 4, 5, 6 |
Elektronegativitas |
2.20 (skala Pauling) |
Energi ionisasi |
partamo: 880 kJ·mol−1 |
ke-2: 1600 kJ·mol−1 |
Jari-jari atom |
136 pm |
Jari-jari kovalen |
141±6 pm |
Lain-lain |
Struktur kristal |
face-centered cubic |
Pambanahan magnetik |
paramagnetik[1] |
Katarhambatan elektris |
(20 °C) 47.1 nΩ·m |
Konduktivitas termal |
147 W·m−1·K−1 |
Ekspansi termal |
6.4 µm/(m·K) |
Kacapatan suaro (batang ringan) |
(20 °C) 4825 m·s−1 |
Modulus Young |
528 GPa |
Modulus Shear |
210 GPa |
Bulk modulus |
320 GPa |
Rasio Poisson |
0.26 |
Kakarasan Mohs |
6.5 |
Kakarasan Viker |
1760 MPa |
Kakarasan Brinell |
1670 MPa |
Nomor CAS |
7439-88-5 |
Isotop paliang stabil |
iso |
NA |
Waktu paruh |
DM |
DE (MeV) |
DP |
188Ir |
syn |
1.73 d |
ε |
1.64 |
188Os |
189Ir |
syn |
13.2 d |
ε |
0.532 |
189Os |
190Ir |
syn |
11.8 d |
ε |
2.000 |
190Os |
191Ir |
37.3% |
Ir stabil dangan 114 neutron
Templat:Elementbox isotopes decay2 |
192m2Ir |
syn |
241 thn |
IT |
0.161 |
192Ir |
193Ir |
62.7% |
Ir stabil dangan 116 neutron |
193mIr |
syn |
10.5 hari |
IT |
0.080 |
193Ir |
194Ir |
syn |
19.3 h |
β– |
2.247 |
194Pt |
194m2Ir |
syn |
171 hari |
IT |
? |
194Ir |
|
· r |