Where are most electronegative elements located on the periodic table?

How many grams of magnesium metal will react completely with 8.3 liters of 5.5 m hcl? show all of the work needed to solve this problem. mg (s) + 2hcl (aq) → mgcl2 (aq) + h2 (g)

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?