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Chemistry, 13.10.2019 11:50 arias333

In the formula x2o5, the symbol x could represent an element in group
(1) 1 (3) 15
(2) 2 (4) 18

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In the formula x2o5, the symbol x could represent an element in group
(1) 1 (3) 15
(2) 2...

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