Respuesta :

Answer:

A1. Sr + 2

A2. P - 3

B1. Sr3P2

Explanation:

A1. Strontium ion | Sr+2

Description: Strontium(2+) is a strontium cation

Molecular Formula: Sr+2

A2.  PubChem CID     5182128

Structure Find Similar Structures

Molecular Formula P-3

B. Strontium phosphide

PubChem CID 166710

Structure Find  Similar Structures

Molecular Formula  Sr3P2 or P2Sr3