Write the electronic configuration and draw the atomic orbital diagram from 1 to 7

What diagram shows the ionic compound of magnesium oxide

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution