Answer: sodium phosphide
Explanation:
[tex]Na_3P[/tex] is an ionic compound because sodium is a metal which forms [tex]Na^+[/tex] by loss of electron.
Phosphorous is a non-metal and The bond formed between a metal and a non-metal is always ionic in nature.
The nomenclature of ionic compounds is given by:
1. Positive is written first.
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
Hence, the name of [tex]Na_3P[/tex] is sodium phosphide.
