Question

an na ion has a charge of +1 and an o ion has a charge of -2. how many na ions does one o ion need to balance charges?

Explanation:

Step1: Set up the equation

Let the number of Na ions be \(x\). The charge of Na ion is \(+ 1\) and charge of O ion is \(-2\). For charges to balance, \(x\times(+1)+(-2)=0\).

Step2: Solve the equation

\(x - 2=0\), then \(x = 2\).

Answer:

\(2\)