<span>The cation is positively charged and has a charge twice that of the anion, for example +2.
The anion is negatively charged and in our example where the cation has a +2 charge, it must have a -1 charge.
In order for the charges to equal zero, there must be two anions: -1 x 2 = -2
So the answer is D. AX2</span>
The positive charge is strongest in the middle, because that is were the charges are going off from.
Answer:
is in units of 
is in units of 
is in units of 
Explanation:
We have the following expression:
Where:
is the distance, hence its unit is (meters, assuming we are using the International System of Units)
is the time, hence its unit is 
(seconds)
So, the expression is rewritten as:
Since the left side of the equation is in meters, the right side must be in meters as well.
In addition, in the right side we have terms that have to added, this means each term must be in meters:
- For the first term must be in units of in order to have meters.
- For the second term must be in units of in order to have meters.
- For the third term must be in units of in order to have meters.
