what is the atomicity of phosphorus ?
and how to calculate the relative mass of compound ?
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1. Atomicity of Phosphorus is 4 (P4)
2.Multiply the atomic mass of each element in the formula with their number in the formula. Then add them all.
For example: Methanol: CH3OH.
No of carbon is 1, no of hydrogen is 4 and oxygen 1.
Their atomic mass is 12, 01, and 16 respectively.
So formula mass: 12*1 + 1*4 + 16 = 32
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