[填空题]
The oxides of two period 3 elements, X and Y, re-y48 lz al 00r ndqakr2v6tbl:act in water accordjqroo (s3 si+7gy y+s7ing to the equations belos(7o yg7jo3is ys+rq +w.
I. + → II. + → 1.Identify elements X and Y. Element X is ;Element Y is .
2.Predict whether element X or Y would have a higher melting point. Element will have a higher melting point than element