AnswersCR SS Chemistry S2 201819 2026Unit Test — Unit testQuestion 22
22
QuizMultiple Choice

Unit Test — Unit test

Question 22 • CR SS Chemistry S2 2018/19 2026

Which rule for assigning oxidation numbers is correct?

Answer
A
Hydrogen is usually –1.
B
Oxygen is usually –2.
C
A pure group 1 element is +1.
D
A monatomic ion is 0.
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