Question 2 (i)
Write down the names of compounds represented by the following formulae:
$(i) A l_{2} (S O_{4})_{3}$

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Solution

$(i) A l_{2} (S O_{4})_{3}$ :
$A l$ is the symbol for aluminium and $S O_{4}$ is the symbol for sulphate. From the chemical formula, it is evident that aluminium is the cation and sulphate is the anion. We know that the name of cation precedes the anion. So, the name of the given compound is "Aluminium sulphate".

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Similar questions

Write down the names of compounds represented by the following formulae:

(i) Al₂(SO₄)₃

(ii) CaCl₂

(iii) K₂SO₄

(iv) KNO₃

(v) CaCO₃

(i i) C a C l_{2}

Question 2 (v)
Write down the names of compounds represented by the following formulae:
$(v) C a C O_{3}$

A l_{2} (S O_{4})_{3}

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