Which list of elements is arranged in order of increasing atomic radii?
(1) li, be, b, c (3) sc, ti, v, cr(2) sr, ca, mg, be (4) f, cl, br, i

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m