Which group of elements contains a metalloid?
(1) group 8 (3) group 16
(2) group 2 (4) group 18

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

A5.00 g of a in . g of at aa 5.00 g of b in . g of .?at .

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule