CREATE TABLE "complete_list_of_the_22_mononuclidic_ele" (
  "element" text,
  "nuclide" text,
  "z_p" real,
  "n_n" real,
  "isotopic_mass_u" text
);

Question: What is the mass of the element with a nuclide that is 169 tm?
SQL: SELECT "isotopic_mass_u" FROM "complete_list_of_the_22_mononuclidic_ele" WHERE "nuclide"='169 Tm';

Question: What is the total number of N for the element with nuclide of 141 pr?
SQL: SELECT COUNT("n_n") FROM "complete_list_of_the_22_mononuclidic_ele" WHERE "nuclide"='141 Pr';

Question: What is the name of the element with isotopic mass of 158.925 34(2)?
SQL: SELECT "element" FROM "complete_list_of_the_22_mononuclidic_ele" WHERE "isotopic_mass_u"='158.925 34(2)';