Question

identification of ions ​

Answer 1

The number of electrons is equal to the atomic number minus the charge of the atom. Refer to an element with either a positive or negative charge as an ion. The charge of the element should always be represented beside the symbol if it is an ion.

Identification of IonsTesting for Cations• Cations are positively-charged ions. Aqueous sodium hydroxide and aqueous ammonia can be used to identify cations in salts. Cations can be identified: – From the colour of the precipitate, and A precipitate of zinc – If the precipitate dissolves in excess hydroxide alkali.

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