How to balance chemical equations can anyone remind me?

To balance chemical equations, think of both sides as a balance that can totter. When one side is heavier it falls and the other rises. The Chemical equation is the same thing: When the equation is balanced, neither the identities nor the mass of both the reactants and the products remain unchanged.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach