Metallic Element Used in Fertilizers
Puzzle 19 of Reality TV Pack
Question is: Metallic Element Used in Fertilizers
and the answer is: POTASSIUM
Word Meaning:
POTASSIUM — A soft, waxy, silvery reactive metal that is never found unbound in nature; an element with atomic number 19 and atomic weight of 39.0983.
Definitions from Wiktionary.