Courses
Mock Exams
For Tutors
For Schools
Pricing
Log In
Start Free
Past Questions
/
OAU
/
Chemistry
/
2008/2009
/
Q21
Question 21
The oxidation number of oxygen in BaO
2
is
A.
-2
B.
-4
C.
-1
D.
0
Objective
Show full explanation
Question details
Exam body
OAU
Subject
Chemistry
Year
2008/2009
Question no.
#21
Type
Objective
Previous · Q20
The electronic configuration in the ground state of the chloride ion (Cl)
Next · Q22
Which ONE of the following statements is true for the p-block elements?
More from this paper
Q16
Which one of the following statements is true?
Q17
A liquid begins to boil when
Q18
An element which exists in more than one crystalline form is said to exhibit.
Q19
Which of the following is an example of a chemical changes?
Q23
The general formula for carboxylic acids
Q24
The functional group represented in the compound CH 3 CH 2 CH 2 CH 2 CH=O is
See all Chemistry 2008/2009 questions