CREATE TABLE table_name_37 (z___p__ NUMBER, n___n__ VARCHAR2, element VARCHAR2)

What is the highest Z (p) when the N (n) is less than 30, and scandium is the element?
SELECT AVG(z___p__) FROM table_name_37 WHERE n___n__ < 30 AND element = "scandium"
SELECT AVG("z___p__") FROM "table_name_37" WHERE "element" = "scandium" AND "n___n__" < 30