A: Good question. And one you should ask of your hotel, too. Resort fees, which can add a full 30 percent onto a hotel bill, may cover everything from wireless Internet and gym access to faxing and use of a notary (huh?)âservices and amenities that you may have no interest in using.
1 Potassium is made, along with several other elements including sulfur, and silicon, during explosive oxygen burning in supernovae. 2  All plants need potassium to survive; over 90% of all human use of potassium compounds is in the manufacture of plant fertilizers.
Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals Metalloids Non-Metals Halogens Noble Gases Rare Earth Elements Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page. Basic Information Name: Potassium Symbol: K Atomic Number: 19 Atomic Mass: 39.0983 amu Melting Point: 63.65 Â°C (336.8 K, 146.57 Â°F)