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What element, atomic number 34, a member of the chalcogens, takes its name from Greek 'moon'?
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| Uranium (U) |
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| Radium (Ra) |
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| Neon (Ne) |
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| Selenium (Se) |
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Selenium (Se) takes its name from the Greek selḗnē, 'moon'.
Atomic number 34, it has a standard atomic weight of 78.971, a melting point of 453 degrees Kelvin, a boiling point of 958 degrees Kelvin, and is a member of the chalcogens and Period 4.
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