Question

for every o ion, two na ions are needed to balance charges. which ratio represents the relationship between na and o?
1 na:1 o
1 na:2 o
2 na:1 o
2 na:2 o

Explanation:

Step1: Analyze the given relationship

We are told that for every \(O\) ion, two \(Na\) ions are needed.

Step2: Write the ratio

The ratio of \(Na\) to \(O\) is \(2:1\) (since there are 2 \(Na\) ions for 1 \(O\) ion).

Answer:

\(2\ Na:1\ O\) (the third option)