Multiple choice

The nickle compound used in rechargeable battery electrodes is

  1. Neodymium(III) chloride

  2. Nickel(II) chloride

  3. Nickel(II) hydroxide

  4. Nickel nitrate
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nickel(II) hydroxide is an insoluble compound commonly used in rechargeable battery electrodes. When charged these electrodes form nickel(III) oxide-hydroxide. Nickel(II) hydroxide is a precipitate formed when the hexaaquanickel(II) ion is mixed with aqueous alkali.

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