Chemical elements
    Physical Properties
      Mechanical Properties
      Plastic Flow
      Coefficient of Expansion
      Thermal Conductivity
      Molten Nickel
      Magnetic Power
      Thermal Properties
      Index of Refraction
      Radiation Energy
      Absorption Spectra
      X-ray Spectrum
      Emission of Electrons
      Photoelectric Effect
      Ionization Potentials
      Conductivity of Crystal Nickel
      Contact Potential
      Electrochemical Series
      Electrode Potential
      Salts Solutions
      Nickel-Iron Accumulator
      Thermoelectric Force
      Peltier effect
      Thomson effect
    PDB 1a5n-1g2a
    PDB 1g3v-1mn0
    PDB 1mro-1s9b
    PDB 1scr-1xmk
    PDB 1xu1-2cg5
    PDB 2cqz-2jih
    PDB 2jk8-2v4b
    PDB 2vbq-3c2q
    PDB 3c6c-3h85
    PDB 3hdp-3kvb
    PDB 3l1m-3o00
    PDB 3o01-4ubp
    PDB 8icl-9ant

The Absorption Spectra of Nickel

Absorption Spectra of Aqueous Nickel
The Absorption Spectra of Aqueous Solutions of Nickel Salt.
For the colour of nickel, vide swpra. The absorption spectra of green conc. aq. soln. of nickel salts shows continuous absorption bands at the violet and red ends, whilst dil. soln. of the chloride, sulphate, and nitrate show a feeble absorption band at 6563 which is characteristic. Observations on the absorption spectra of aqueous, alcoholic, or acetone soln. of nickel salts were made by D. Brewster, H. Becquerel, V. Agafanofi, H. Emsmann, M. Pavlik, W. N. Hartley,,T. M. Hiebendaal, T. Inoue, C. Kubierschky, H. Ley, E. Muller, J. L. Soret, J. Moir, J. von Koczkas, Y. Shibata and K. Matsuno, R. Samuel and co-workers, M. Kahanowicz and P. Orecchioni, J. Gielessen, J. C. McLennan and co-workers, N. S. KurnakofE, T. Dreisch, J. Angerstein, H. W. Vogel, M. Kimura and M. Takewaki, R. A. Houstoun and co-workers, H. C. Jones and J. A. Anderson, and J. Formanek.
Absorption Spectra of solutions of Nickel salt
The Absorption Spectra of Aqueous and Alcoholic Solutions of Nickel Salts.
The colour of nickel was discussed by J. Piccard and E. Thomas. The mol. extinction coeff., A, is a function of wave-length, A, as indicated by R. A. Houstoun, whose results for aq. soln. are summarized in Fig. - vide the absorption spectra of cobalt salts. The effect of concentration on the mol. extinction coeff. of aq. soln. of nickel chloride is summarized in Fig. The three aq. soln. have the respective concentrations 0.10, 1.00, and 4.00 mols. per litre; and the alcoholic soln. has the concentration 0.026 mol per litre. Nickel chloride in a conc. hydrochloric acid soln. is yellowish-green. The soln. absorbs feebly in the red and strongly in the blue and violet. By diluting the soln., no absorption bands appear, but the continuous absorption in the red and violet becomes weaker. Ammoniacal soln. of nickel salts have a broad absorption band in the yellow at about 5740. Alcoholic soln. of nickel salts are green, and the conc. soln. have a strong absorption band in the red and violet. If the soln. be diluted with alcohol, the absorption is weaker, and besides a continuous absorption in the red and violet there is a weak band at 6607. R. A. Houstoun and A. H. Gray found for the mol. extinction coeff. of alcoholic soln. of nickel salts the results summarized in Fig. and for acetone soln.. the results indicated in Fig.

Effect Concentration to Absorption Spectra Nickel
The Effect of Concentration on the Absorption Spectra.
Absorption Spectra of Alcoholic Solution of Nickel Salts
Absorption Spectra of Alcoholic Solution of Nickel Salts.
Absorption Spectra of Acetone Solution of Nickel Salts
Absorption Spectra of Acetone Solutions of Nickel Salts.

According to J. Formanek, tincture of alkanna reacts directly with nickel salts so that a neutral soln. of nickel chloride becomes violet, and the absorption spectrum shows a band at 6192, and subordinate bands at 5725 and 5320. If a drop or two of ammonia be added to the liquid, the colour becomes more blue, there is a small displacement of the three bands respectively to 6198, 5732, and 5325; with more ammonia, a blue precipitate appears. Similar results were obtained with a soln. of the nitrate. M. Luckiesh, D. Starkie and W. E. S. Turner, T. Dreisch, R. W. Wood, H. P. Gage and W. C. Taylor, and P. Gilard and P. Swings studied the spectral transmission of glasses coloured with nickel.

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