Multiple choice general knowledge science & technology potassium hydroxide KOH K2OH K(OH)2 None of the above Reveal answer Fill a bubble to check yourself A Correct answer Explanation Potassium (K) forms a +1 ion, and hydroxide (OH) is a -1 polyatomic ion. They combine in a 1:1 ratio to give KOH. K2OH would imply K2+ which doesn't exist, and K(OH)2 would require a +2 charge.