Please Help 50 Points + Brainlest Put the elements Br, K, Al, and Ne in order by number of valence electrons, from smallest to largest.
A) Al, Ne, Br, K
B) Br, K, Al, Ne
C) Ne, Al, K, Br
D) K, Al, Br, Ne

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)