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July 29, 2015

Homework Help: Chemistry

Posted by sarah on Monday, February 19, 2007 at 5:29am.

What is the valency of selenium in hydrogen selenide?

Consider what selenium's group is in the periodic table. There is oxygen and sulfur, right? Selenium will the same as those. The all have the same basic formula with hydrogen. What's that very common substance that contains hydrogen and oxygen?

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