What part of the earth is made up of the tectonic plates? list and describe the motion of the three types of plate boundaries

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Which statement best describes the flow of energy in this scenario

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom