Which formula contains a polyatomic ion?

Mayya Alocci
Aug 19, 2024
1 min read

Regents Chemistry Exam June 2024 Question 7

7 Which formula contains a polyatomic ion?

(1) KCN

(2) K2S

(3) AlBr3

(4) Al2O3

Solution:

Polyatomic ions can be found in Table E on the Reference Table. CN- is a polyatomic ion, called cyanide, and it is a part of KCN. Choice 1 is the correct answer.

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Which formula contains a polyatomic ion?

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