What is the Lewis structure for H2Se

1 answer:

6 0

Basically since there’s 2 hydrogen’s there will be two H’s on either side of your other element. And Se is in group 6 which means it has 6 valence electrons. When you combine 6 and 2 from the hydrogen you get 8. You then should place 8 dots around Se two on each side.

So something like H Se(with 8 dogs around it) H

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A copper atom has a mass of 1 06 times 10^-22 g and a penny has a mass of 2.5 g. Use this information to answer the questions be

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Explanation:

Mass of 1 copper atom,m = $1.06\times 10^{-22} g$

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= $6.022\times 10^{23} atoms\times 1.06\times 10^{-22} g=63.83 g$

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