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(a)Give one point of difference betweeen...

(a)Give one point of difference betweeen an atoms and an ion.
(b)Give one example of each of polyatomic cation and a polyatomic anion.
(c )Identify the correct name of `FeSO_(3)` from the given names-Ferrous sulphate, Ferrous sulphide, Ferrous sulphite.
(d)Write the chemical formulae for the chloride the magnesium.

Text Solution

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(a)An atom is always neutral in the sense that it does not carry any charge. An ion carries either positive charge (cations) or negative charge (anion).
(b)Ammonium `(NH_(4))^(-)` ion is a polytomic cation while sulphate `(SO_(4))^(2-)` ion is a polyatomic anion.
(c)Correct chemical name of `FeSO_(3)` is ferrous sulphite.
(d)Chemical formula for the chloride of magnesium is `MgCl_(2)`.
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