Solid state in room temperature.
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Potassium hydroxide is a white, solid substance at room temperature. It is commonly found in the form of pellets, flakes, or powder.
At room temperature, copper hydroxide is solid.
Potassium hydroxide is a white solid at room temperature, commonly known as caustic potash. It is highly corrosive and hygroscopic, meaning it readily absorbs water from the atmosphere. When dissolved in water, it forms a strongly alkaline solution.
NO!!! Potassium hydroxide contains;- 1 X potassium(K) 1 x Oxygen (O) 1 x Hydrogen (H). To give the formula 'KOH'. NB Helium is 'He'. It is the most unreactive element of all. It remains in the monatomic gaseous state. So it is not part of potassium hydroxide.
Zinc hydroxide is a solid state compound at room temperature.
Hydrogen's physical state at room temperature is a gas.