Mg(s) + hcl (aq) mgcl2(aq) + h2(g) consider the above unbalanced equation. what volume of h2 is produced at 705 mm hg and 50.0°c when 0.545 g of mg reacts with excess hcl? use molar masses with at least as many significant figures as the data given.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

20 drops hope this