If an element has 12 protons and 17 neutrons, how many electrons must it have?

What provides structure to the human body?

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.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?