What is the highest Z (p) when arsenic is the element, and the N (n) is more than 42
CREATE TABLE "complete_list_of_the_22_mononuclidic_ele" (
  "element" text,
  "nuclide" text,
  "z_p" real,
  "n_n" real,
  "isotopic_mass_u" text
);
SELECT MAX("z_p") FROM "complete_list_of_the_22_mononuclidic_ele" WHERE "element"='arsenic' AND "n_n">42;