The sixty first element in the Periodic Table of elements is promethium. It is a rare earth metal that is not found naturally on Earth and is typically produced in nuclear reactors.
Dysprosium
Holmium
The sixty-ninth element in the periodic table is thulium (Tm). It is a rare earth metal with atomic number 69 and is named after the ancient city of Thule.
The sixty-fifth element in the periodic table is terbium, which has the atomic number 65 and symbol Tb. It is a rare earth metal that is commonly used in electronic devices and lighting applications.
Elements commonly found in industrial applications include iron, aluminum, copper, and carbon. Compounds such as sulfuric acid, ammonia, and sodium hydroxide are also commonly used in various industries for manufacturing processes, water treatment, and chemical reactions.
Samarium
Europium
Erbium
Dysprosium
Holmium
The sixty-ninth element in the periodic table is thulium (Tm). It is a rare earth metal with atomic number 69 and is named after the ancient city of Thule.
The sixty-fifth element in the periodic table is terbium, which has the atomic number 65 and symbol Tb. It is a rare earth metal that is commonly used in electronic devices and lighting applications.
In the year 1869, sixty-three elements were known. Out of the 92 naturally-occurring elements, the following were yet to be found:HeliumNeonArgonScandiumGalliumGermaniumKryptonTechnetiumXenonthe Lanthanoids*HafniumRheniumthe Radioactive Elements***With the exception of lanthanum, cerium, and terbium.**With the exception of thorium and uranium.
Sixty-first.
61st is spelled out as "sixty-first."
61st or sixty-first.
Because it is the 60 SECOND street. Get it? 62nd street :: Sixty second street