an ionic bond for calcium and oxygen is cao. if an oxygen ion has a charge of two negative, what is the…
an ionic bond for calcium and oxygen is cao. if an oxygen ion has a charge of two negative, what is the charge for calcium?\n+2\n-1\n+1\n-2
Answer
Explanation:
Step1: Recall ionic - compound charge rule
In an ionic compound, the overall charge is zero.
Step2: Set up charge - balance equation
Let the charge of calcium be $x$. The charge of oxygen is - 2. For the compound CaO, we have $x+( - 2)=0$.
Step3: Solve for the charge of calcium
Add 2 to both sides of the equation: $x=+2$.
Answer:
A. +2