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3 July, 08:40

Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the "2" tell you?

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  1. 3 July, 09:01
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    The 2 tells that "Br" has a sunscript of 2
  2. 3 July, 09:07
    0
    That the magnesium cation has 2 + charge. it needs 2 electrons to stabilize its valence ... 2 electrons are provided by 2 Br (-1) anions.
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