Question

How many phosphorous atoms are found in three molecules of magnesium phosphate, 3Mg3(PO4)2?

1
2
3
6

Answer 1

Answer: Option (d) is the correct answer.

Step-by-step explanation:

Since the given formula is
`3Mg_(3)(PO_(4))_(2)`. According to cross method formula, magnesium has +2 charge so,
`PO_(4)` is multiplied by 2.

Thus, 1 molecule of magnesium phosphate will contain 2 atoms of phosphorus.

Therefore, three molecules of magnesium phosphate contains following number of atoms.

• Mg = 9

• P = 6

• O = 24

Hence, we can conclude that there are 6 atoms of phosphorus in three molecules of magnesium phosphate,
`3Mg_(3)(PO_(4))_(2)`.