Write answers to the following questions and explain your answers.

M is a bivalent metal. Write down the steps to find the chemical formulae of its compounds formed with the radicals, sulphate and phosphate

M is bivalent which means it has a valency of 2.


(i)For sulphate


Step 1: To write the symbols of the radicals. (Basic radical on the left.)


M SO4


Step 2: To write the valency below the respective radical.


M SO4


+ 2 -2


Step 3: To cross-multiply as shown by the arrows the number of the radicals.



Step4: To write down the chemical formula of the compound in the simplest form.


MSO4


(ii) for phosphate


Step 1:To write the symbols of the radicals. (Basic radical on the left.)


M PO4


Step 2: To write the valency below the respective radical.


M PO4


+ 2 -3


Step 3: To cross-multiply as shown by the arrows the number of the radicals.



Step4: To write down the chemical formula of the compound in the simplest form.


M3(PO4)2


4