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QuestionChemistry

What is the total number of valence electrons in the phosphate ion?
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Step 1:
I'll solve this step-by-step following the LaTeX formatting guidelines precisely:

Step 2:
: Identify the composition of the phosphate ion

• The phosphate ion is $$PO_{4}^{3-}
• It contains one phosphorus (P) atom and four oxygen (O) atoms

Step 3:
: Determine valence electrons for phosphorus

\text{Phosphorus valence electrons} = 5
• Phosphorus is in Group 15 (VA) • Phosphorus has 5 valence electrons

Step 4:
: Determine valence electrons for oxygen

\text{Oxygen valence electrons} = 6 \times 4 = 24
• Oxygen is in Group 16 (VIA) • Oxygen has 6 valence electrons • There are 4 oxygen atoms

Step 5:
: Account for the ion's charge

\text{Charge electrons} = 3
• The phosphate ion has a 3 - charge • This means 3 additional electrons are present

Step 6:
: Calculate total valence electrons

\text{Total valence electrons} = 5 + 24 + 3 = 32

Final Answer

The phosphate ion PO_{4}^{3 -} has 32 total valence electrons.