Does nickel form a precipitate when mixed with ammonia or does it form a soluble product?

Nickel forms precipitate when it reacts with ammonia

Explanation:

The reaction between Nickel and ammonia is such that produces a precipitate which dissolves when excess amount is added to it.

At first, the precipitate produces a green precipitate of Ni(OH)₂ when more ammonia is added, the precipitate eases or dissolves, to form a  solution of complex ion of Nickel forms.

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