Ultrasonic humidifiers are the quietest humidifiers available, and the ideal choice when noise level is a concern (if you are a light sleeper). In general, a warm moisture humidifier will be much quieter than a cool moisture evaporative humidifier.
Iodine is a chemical element with symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at a standard conditions that sublimes readily to form a violet gas. The elemental form was discovered by the French chemist Bernard Courtois in 1811.
Iodine pentafluoride is molecular. It has a pyramidal shape. It is a reactive compound which is a colourless liquid at room temperature. Molecular compounds are formed betwe â¦ en two non-metals. Both iodine and fluorine are non-metals. The formula for the compound would be IF5.