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What period and group (number and name) is Selenium in?
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What period and group (number and name) is Selenium in?

User Kasas
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Answer:

Group 16 Melting point 220.8°C, 429.4°F, 494 K

Period 4 Boiling point 685°C, 1265°F, 958 K

Step-by-step explanation:

User Bryan
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