amayarayne5
06.10.2020 •
Chemistry
An atom has 18 protons and 8 valance electrons. Which statement would best identify this elementa A. The element is highly reactive with eight electrons in its outer shell. B. The element has an atomic mass of 18. C. The element is "happy" or stable because it outer energylevel is filled. D. The element is a metal.
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Ответ:
Hyrdrogen monobromide is : HBr
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