When writing the formula for magnesium phosphide, what is the correct ratio of magnesium to phosphide ions?
Understand the Problem
The question is asking about the chemical formula for magnesium phosphide and the correct stoichiometric ratio of magnesium ions to phosphide ions. To solve this, we need to know the charges of magnesium and phosphide ions and determine how they combine to form a neutral compound.
Answer
3:2
The correct ratio of magnesium ions to phosphide ions in magnesium phosphide (Mg3P2) is 3:2.
Answer for screen readers
The correct ratio of magnesium ions to phosphide ions in magnesium phosphide (Mg3P2) is 3:2.
More Information
The chemical formula for magnesium phosphide, Mg3P2, indicates that there are three magnesium ions for every two phosphide ions. This results from balancing the charges, with each magnesium ion carrying a +2 charge and each phosphide ion carrying a -3 charge.
Tips
A common mistake is confusing phosphide (P) with phosphate (PO4), which would change the compound and its ratio.
Sources
- How can I write the formula for magnesium phosphide? - Socratic - socratic.org
- The web page with info on - Example Source - toppr.com
