How do you know whether or not an element has high electronegativity? are you supposed to look at the periodic table and determine it there? what exactly do you look for (i attached a picture of the periodic table) i am trying to figure out how chlorine specifically has high electronegativity

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.

Can someone me with questions 15 to 17 plz.

The rules of engagement (roe) working group is often used to (select all that apply.)