Multiple Choice
Which of the following is the most stable monatomic ion formed from nitrogen?
2
views
2. Atoms & Elements
Ions
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In a formula unit of CoO, the total oxide ion charge is 2–. What is the charge on each cobalt ion?
A
0
B
1+
C
2+
D
3+
Verified step by step guidance1
Identify the charge on the oxide ion (O). Since the problem states the total oxide ion charge is 2–, and there is one oxide ion in CoO, the charge on the oxide ion is –2.
Recall that the compound CoO is electrically neutral overall, meaning the sum of the charges of cobalt (Co) and oxide (O) must equal zero.
Set up an equation where the charge on cobalt ion is represented as x. Since there is one cobalt ion and one oxide ion, the total charge is x + (–2) = 0.
Solve the equation for x: x – 2 = 0, which gives x = +2.
Conclude that the charge on each cobalt ion in CoO is +2.
Related Videos
Related Practice
