HORTICULTURE

Detailed explanation-1: -There are eleven elements represented in the periodic table by letters not in line with their names: Sodium (Na – Natrium) Potassium (K – Kalium) Iron (Fe – Ferrum)

Detailed explanation-2: -The only chemical element to begin with the letter K is krypton. While one might think this would mean its chemical symbol is the letter K, that symbol already belonged to potassium. Potassium got its symbol from an older word for potassium, which is the Latin word kalium for potash.