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Sa Wikipedije, slobodne enciklopedije

Nikl (Ni, latinski - niccolum) je metal VIIIB grupe. Ima 14 izotopa čije se atomske mase nalaze između 53-67, od kojih je postojano 5 (58,60,61,62,64).

Rasprostranjenost [uredi]

Zastupljen je u zemljinoj kori u količini od 80 ppm (eng. parts per million) u obliku minerala garnierita i pantlandita.

Godine 1751 otkrio ga je Axel Fredrik Cronstedt.

Nikl gradi niz kompleksnih jedinjenja kao na primjer nikolcen

Biološki značaj [uredi]

Nikl je mikroelementi prisutan u mnogim enzimima. Dnevno bi ga trebalo minimalno unositi u količini 0,3 miligrama.

Osobine [uredi]

Nikl je srebrnobijele boje blistav metal otporan na koroziju. Koristi se za prevlačenje drugih metala radi zaštite. Legure nikla i bakra se koriste za izradu kovanog novca, pribora za jelo. Nikl se takođe dodaje čeliku i drugim legurama da bi povećao njihovu otpornost na koroziju.

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