Question

question 6 (1 point)
listen
the correct names of fe3(po4)2 and zn(no3)2 are:

1. iron(iii)phosphate and zinc nitrate
2. iron(ii)phosphate and zinc nitrate
3. iron(ii)phosphide and zinc nitrogen oxide
4. iron(iii)phosphide and zinc nitrogen oxide

Explanation:

• For \(Fe_3(PO_4)_2\):
• Phosphate ion is \(PO_4^{3 -}\). Let the oxidation state of \(Fe\) be \(x\). Using the charge - neutrality principle (\(3x+2\times(- 3)=0\), so \(3x = 6\) and \(x = 2\)). So, it is Iron(II) phosphate.
• For \(Zn(NO_3)_2\):
• Nitrate ion is \(NO_3^{-}\). Zinc has a fixed oxidation state of \(+2\) in its common compounds. The name is Zinc nitrate.

Answer:

1. Iron(II)Phosphate and Zinc nitrate