| Wikipedia | Element |
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| A soft silvery metallic element, **** is a rare earth element of the lanthanide series and is found in the minerals gadolinite, monazite, and xenotime. | |
| It is a ductile metal with very high thermal and electrical conductivity. | |
| It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature. | |
| It is the lowest atomic number element without any stable isotopes; every form of it is radioactive. | |
| It is an alkaline earth metal and the seventh most abundant element in the Earth's crust, where it constitutes about 2% by mass, and ninth in the known Universe as a whole. | |
| It is the 100th element in the periodic table and a member of the actinide series. | |
| It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as the decay product of uranium. | |
| It was formerly known as eka-caesium and actinium K. | |
| Elemental **** is a soft silvery-white metallic alkali metal that oxidizes rapidly in air and is very reactive with water. | |
| It is also known as quicksilver or hydrargyrum, from 'hydr-' water and 'argyros' silver. | |
| **** is a hard, brittle, blue-gray or blue-black transition metal in the platinum family, and is the densest natural element. | |
| Its name derives from the Greek roots ὀξύς and -γενής, because at the time of naming, it was mistakenly thought that all acids required **** in their composition. | |
| It has the chemical symbol Rh and atomic number 45. | |
| This transuranic element of the actinide series is located in the periodic table below the lanthanide element europium, and thus by analogy was named after another continent. | |
| It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. | |
| It is the first element in group 12 of the periodic table. | |
| **** is a dense, soft, shiny metal and the most malleable and ductile metal known. | |
| Its name is derived from the Spanish term **** del Pinto, which is literally translated into 'little silver of the Pinto River.' | |
| The lightest halogen, it is not found as a free element on Earth, but does occur in the interstellar medium, stars and planetary nebulae. | |
| The name is pronounced ****; from the Greek: ιώδης, meaning violet or purple. | |
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