Answer:
PCl5
Explanation:
1 Phosphorus (P)
5 Chlorine (Cl)
P1Cl5 =
PCl5
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PCl(5)
Explanation:
P is phosphorous, chlorine is Cl
P(1atom) CL(5atoms)
We don't need to write the 1 atom for the P.
So PCl5
Make sure the 5 is the tiny lowercase.