18
QuizMultiple Choice

Chemical Bonding — Test

Question 18 • Physical Science

Sodium and phosphorus combine to form Na 3 cap p What is the name of this compound?

Answer
A
sodium phosphide
B
phosphorus sodide
C
phosphorus sodiate
D
sodium phosphate

Explanation

Na₃P is an ionic compound made from sodium ions and phosphorus ions. When phosphorus forms a negative ion, its name changes to phosphide, so Na₃P is sodium phosphide.

AI-written and checked against the verified answer.

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