What is the formula of Lithium Hydroxide?

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Multiple Choice

What is the formula of Lithium Hydroxide?

Explanation:
The key idea is balancing charges to form a neutral compound. The hydroxide ion carries a -1 charge (OH−), and lithium forms a +1 cation (Li+). To balance the charges, you need one Li+ for every one OH−, giving the formula LiOH. This represents one lithium ion paired with one hydroxide ion in a neutral salt. The other options would not balance to a neutral compound: Li2OH would carry too much positive charge, LiOH2 would be too negative, and LiO2H isn’t the correct way to write a standard lithium hydroxide formula.

The key idea is balancing charges to form a neutral compound. The hydroxide ion carries a -1 charge (OH−), and lithium forms a +1 cation (Li+). To balance the charges, you need one Li+ for every one OH−, giving the formula LiOH. This represents one lithium ion paired with one hydroxide ion in a neutral salt. The other options would not balance to a neutral compound: Li2OH would carry too much positive charge, LiOH2 would be too negative, and LiO2H isn’t the correct way to write a standard lithium hydroxide formula.

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