Work out the formula for magnesium hydrogencarbonate.

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Solution

well , to find the formula of this compound , we need to know two things .
•firstly, symbol of the elements and secondly , the valency of elements.
•the symbols of the elements is - magnesium - mg
and,
hydrogen carbonate or bicarbonate -

•and valency of these elements is :-
magnesium : 2
hydrogen carbonate : 1.

•now , we will frame the formula :-

on using criss cross method:
•finally you will get the formula of magnesium hydrogen carbonate to be

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The formula for Magnesium carbonate is:

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