Question

M is a balanced metal write down the steps to find the chemical formula of its compound formed with the radical sulphate and phosphate

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Answer 1

Answer:

M is bivalent metal means it has valency 2. Beryllium, Magnesium, Calcium,Scandium, Barium, Radium are metals having valency 2. To write chemical formula of any compound the simplest method is criss cross method. Step 1: we will take Magnesium to form compound with sulphate.

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Answer 2

Answer:

M is a bivalent metal as it has valency 2 (M2+ ). Given below are the steps to find the chemical formula of its compounds formed with the radicals, sulphate and phosphate:

First, take metal to form a compound with sulfate. Hence,

M SO4

Now write the valency of both components (metal is 2 as it is bivalent and sulphur is 2 as it belongs to the halogen family). Now, cross multiplying the radicals with the valencies you get

MSO4, as one ion of metal M and one sulphate ion will balance each other.

Phosphate(PO4)3-, in the meantime, is a trivalent anion. So, given 2 valence of metals with 3 valence of phosphate to cross multiply, you get the chemical formula M3(PO4)2.

Explanation:

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