how many ions that have a +1 charge will bond with an ion that has a -2 charge?\none\ntwo\nthree\nfour

Answer:

B. two

Explanation:

Step1: Understand charge - balance

For a stable ionic compound, the total positive charge must equal the total negative charge.

Step2: Set up charge - balance equation

Let the number of + 1 charged ions be $x$. The charge of a - 2 charged ion is - 2. We want $x\times(+1)+(-2)=0$.

Step3: Solve for $x$

$x - 2=0$, so $x = 2$.