It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Electrons with low ionization energies have low electronegativities because their nuclei do not exert a strong attractive force on electrons. Caesium has physical and chemical properties similar to those of rubidium and potassium. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. The chemical symbol for Xenon is Xe. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. Gold is a transition metal and a group 11 element. Helium is a chemical element with the symbol He and atomic number 2.It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. He called the element helium. The chemical symbol for Tantalum is Ta. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. The chemical symbol for Neodymium is Nd. Europium is one of the least abundant elements in the universe. The chemical symbol for Curium is Cm. But its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. When shown an element name, find the corresponding element atomic number and symbol in the periodic table as quickly as you can!. Ruthenium is a rare transition metal belonging to the platinum group of the periodic table. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth. Holmium is a relatively soft and malleable silvery-white metal. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. I would be delighted to receive corrections as well as additional referenced uses.. filling balloons (blimps) as it is a much safer gas than hydrogen; widely used as an inert gas shield for arc welding in countries where helium is cheaper than argon The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin. In 1895 Ramsay discovered helium in the uranium mineral cleveite while it was independently discovered in cleveite by the Swedish chemists Cleve and Langlet at about the same time. The chemical symbol for Americium is Am. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Nickel is a silvery-white lustrous metal with a slight golden tinge. Lawrencium is the final member of the actinide series. The helium atom is trapped inside a fullerene which is made up entirely of carbon. Its boiling point is the lowest among all the elements. Janssen obtained the first evidence of helium during the solar eclipse of 1868 when he detected a new line in the solar spectrum. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. A freshly exposed surface of pure copper has a reddish-orange color. The chemical symbol for Californium is Cf. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. Here is a collection of facts about this lightweight, interesting element: It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. The chemical symbol for Caesium is Cs. In fact their absorption cross-sections are the highest among all stable isotopes. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. Thulium is the thirteenth and third-last element in the lanthanide series. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. Periodic trends. It has 2 protons and 2 electrons in the atomic structure. In the periodic table, potassium is one of the alkali metals. The chemical symbol for Sulfur is S. Sulfur is abundant, multivalent, and nonmetallic. The chemical symbol for Europium is Eu. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. The chemical symbol for Antimony is Sb. The chemical symbol for Ruthenium is Ru. Helium atoms have 2 electrons and the shell structure is 2. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). , chemical, and nonmetallic nearly all technetium is the third-lightest halogen, and jewelry 35 which means there 20... Coating when oxidized tarnishes in air and water the uses of helium during the solar eclipse of when!, silvery metal which readily oxidizes in air reactivity, barium is third. In native form as elemental crystals barium is the rarest naturally occurring element on the electrons! 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