Niyakari (kureva nickel, kubva paChiarabhu: النيكل alniykal) kana Nikeru kutodza Chingezi, inhangande ye chemishonga inoshandisa Ni sechiratidzo uye ine numeri ye hatomu ya 28. Isimbi inohwinya uye yechisirivha-chena inekaundrama kainako. Niyakari isimbi youdarikira yakaoma uye inopambadzirwa. Niyakari tsvene inorhiyekta pazvechemishonga asi zvidimbu zvikuru zvinorhiyekta noupore-pore nemweya mumakondisheni echidzikwe nekuti hwada rekupasivha (kureva passivation) remafomu eniyakari yechivututsiro pachiso inodzivirira kumwe kun'ura. Zvakadaro, niyakari tsvene inowanikwa muchigoko cheRinopasi muuwandu ushoma, karuzhinji inowanikwa mumatombo e-ultramafic, uye nemu maintiriya enyuruko dzikuru dzeniyakari-utare dzisinakugangaridzwa kuoksijeni dziri kunze kwe guteromweya re Rinopasi.
| Niyakari, Ni28
|
|
| Niyakari
|
| Ratidziko:
|
Niyakai ino:
- kuhwinya,
- rusimbi,
- sirivha ne kaundarama
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| chidzikwe cheuremu
wehatomu Ar°(Ni):
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- 58.6934±0.0004
- 58.693±0.001 (abridged)
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|
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| Numeri yehatomu (Z)
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28
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| Boka:
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boka 10
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| Piriyodhi:
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piriyodhi 4
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| Bhuroku:
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d-bhuroku
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| Jenganiso yemhodzigetsi:
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[Ar] 3d8 4s2 or [Ar] 3d9 4s1
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| Mhodzigetsi mu-shell:
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2, 8, 16, 2 or 2, 8, 17, 1
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| Miriki dzemutumbi:
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| Fezi pa STP
|
godo
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| Poyindi yekunyeuka:
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1728 K (1455 °C, 2651 °F)
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| Poyindi yekufanza:
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3003 K (2730 °C, 4946 °F)
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| Dhenisi (pedyo ne-r.t.)
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8.908 g/cm3
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| Semutuvi (pa m.p.)
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7.81 g/cm3
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| Dziya yekunyenguka:
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17.48 kJ/mol
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| Dziya yekupfunga:
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379 kJ/mol
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| Molar heat capacity
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26.07 J/(mol·K)
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Vapor pressure
| P (Pa)
|
1
|
10
|
100
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1 k
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10 k
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100 k
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| at T (K)
|
1783
|
1950
|
2154
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2410
|
2741
|
3184
|
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| Miriki dze ruhatomu
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| Umiriro we rututsiro:
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−2, −1, 0, +1, +2, +3, +4
(a mildly basic oxide)
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| Electronegativity
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Pauling scale: 1.91
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| Ito (eneji) dzekunonda:
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- 1st: 737.1 kJ/mol
- 2nd: 1753.0 kJ/mol
- 3rd: 3395 kJ/mol
- (more)
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| Rhedhiyasi yehatomu:
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empirical: 124 pm
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| Rhedhiyasi
yegombedzwana:
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124±4 pm
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| Rhedhiyasi ye
vhandewaarusi:
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163 pm
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