28. magnesium bromide is a binary ionic compound. from its formula, mgbr2, how do you know that mg is the metal? (pages 567-568)
29. element x has five valence electrons, element y has one valence electron, and element z has one valence electron. which two of these elements are most likely to have similar properties? explain your answer. (page 503)
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Ответ:
See Below
Explanation:
28. In ionic compounds the metal is always at the left.
MgBr2
Cu(SO4)2
CaCO3
FeO
Li2O
etc
29.
Elements from same group are more likely to have similar properties.
Since Y and Z have one valence electron they are from the same group, therefore are more likely to have similar properties
Ответ:
The correct answer is D.) none of the above.