It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. The chemical symbol for Silicon is Si. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. Therefore the sodium electron configuration will be 1s22s22p63s1.

The chemical symbol for Praseodymium is Pr. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. In the periodic table, the elements are listed in order of increasing atomic number Z. Lead is widely used as a gamma shield. The chemical symbol for Strontium is Sr. Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically. Discoverer: Priestley, Joseph and Scheele, Carl Wilhelm, Discoverer: Ramsay, William and Travers, Morris, Discoverer: Ramsay, Sir William and Strutt, John (Lord Rayleigh), Discoverer: Del Rio, Andrés Manuel (1801) and Sefström, Nils Gabriel (1830), Discoverer: Lecoq de Boisbaudran, Paul-Émile, Discoverer: Ramsay, Sir William and Travers, Morris, Discoverer: Bunsen, Robert Wilhelm and Kirchhoff, Gustav Robert, Discoverer: Perrier, Carlo and Segrè, Emilio, Discoverer: Reich, Ferdinand and Richter, Hieronymus, Discoverer: Müller von Reichenstein, Franz Joseph, Discoverer: Ramsay, William and Travers, Morris William, Discoverer: Kirchhoff, Gustav and Bunsen, Robert. i) The electronic configuration of Chlorine (atomic number is 17) is-, ii) The electronic configuration of Titanium (atomic number is 22) is-, 13630 views Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure.

The chemical symbol for Iodine is I. Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. 4397 views Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Fr is univalent and would react as an alkali metal. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure.

The chemical symbol for Sodium is Na. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. The chemical symbol for Sodium is Na. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. Gold is a transition metal and a group 11 element.

The chemical symbol for Manganese is Mn. Figure \(\PageIndex{4}\): The diagram of an electron configuration specifies the subshell (n and l value, with letter symbol) and superscript number of electrons. The chemical symbol for Sodium is Na. The chemical symbol for Oxygen is O. Radon is a radioactive, colorless, odorless, tasteless noble gas. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. Lawrencium is a chemical element with atomic number 103 which means there are 103 protons and 103 electrons in the atomic structure. What are some examples of electron configurations? Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. Tungsten is an intrinsically brittle and hard material, making it difficult to work.

In Aufbau Principle, the electrons are filled according to the increasing energy level of orbitals. Astatine is the rarest naturally occurring element on the Earth’s crust. The chemical symbol for Calcium is Ca. The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. Sodium metal is thus a good reducing agent that readily forms Na^+...what is … The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Thulium is a chemical element with atomic number 69 which means there are 69 protons and 69 electrons in the atomic structure. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226.