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Which elements are liquid at room temperature?

Mercury ("liquid silver," Hg, element 80) and bromine (Br, element 35) are liquid at room temperature, 68° to 70° Fahrenheit (20⁰ to 25⁰ Celsius). Gallium (Ga, element 31), with a melting point of 85.6⁰ Fahrenheit (29.8⁰ Celsius), and cesium (Cs, element 55), with a melting point of 83⁰ Fahrenheit (28.4⁰ Celsius), are liquids at slightly above room temperature.

Sources: Brown, Theodore L. Chemistry, 4th ed., pp. 140, 143; Hackh, Ingo W. D. Grant and Hackh's Chemical Dictionary, 5th ed., pp. 96, 362; Science and Technology Illustrated, vol. 6, p. 658.

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1. Chemists And Chemical Principles
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   2. Who made the first organic compound to be synthesized from inorganic ingredients?
   3. Who is known as the founder of crystallography?
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   3. What were some of the leading contributions of Albert Einstein?
   4. What is inertia?
   5. Who is generally regarded as the founder of quantum mechanics?
   6. Who is the founder of the science of magnetism?
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3. Chemical Elements
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   2. Who developed the periodic table?
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   4. What are the alkaline earth metals?
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