A sample of ammonium phosphate, $(N H_{4})_{3} P O_{4}$ , contains 6 moles of hydrogen atoms. The number of moles of oxygen atoms in the sample is :

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Solution

The correct option is B 2
No. of H-atoms $= 12$
No. of O-atoms $= 4$
$∴$ so, ratio of no. of atoms $=$ ratio of no. of moles
$\frac{12}{4} = \frac{6}{n_{o}}$
$n_{o} = 2$

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