How many protons, neutrons, and electrons are in a neutral atom of Phosphorus, if its atomic number is 15 and its mass number is 30.97? 15 protons, 15 neutrons, 15 electrons
15 protons, 31 neutrons, 15 electrons
16 protons, 15 neutrons, 16 electron
15 protons, 16 neutrons, 15 electrons

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.

Label a-f based on the table using c for concentrated and d for dilute

Astudent is asked to identify and element that is pale yellow brittle solid and does not conduct electricity. at which location in this periodic table would the element most likely be found?