Question
Aluminium hydroxide:

Answer

Step – 1 : To write the symbols of the radical (Basic radical on the left and acidic radical on the right)
$Al OH$
Step – 2 : To write the valency below the respective radical.
Maharashtra Board Class 9 Science Solutions Chapter 4 Measurement of Matter 61
Step – 3: To cross-multiply as shown by arrows the number of radicals.
Maharashtra Board Class 9 Science Solutions Chapter 4 Measurement of Matter 46
Step – 4 : To write down the chemical formula of the compound.
$Al(OH)_3$
(Aluminium hydroxide)

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