AnswersCR SS Chemistry S2 201819 2026Unit Test — Unit testQuestion 21
21
QuizMultiple Choice

Unit Test — Unit test

Question 21 • CR SS Chemistry S2 2018/19 2026

What is the oxidation number for N in the compound NH3? (Recall that H usually has an oxidation number of +1.)

Answer
A
–3
B
–1
C
0
D
+3
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