The newly-discovered element X (Xeruvium) is a transition metal that can have multiple oxidation states and has a molar mass of 37.70 g/mol. What is the molar
mass of the compound X(NO2)2?
129.72 g/mol
223.30 g/mol
O 167.42 g/mol
115.74 g/mol

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it is the most commonly accepted one