The electron configuration for strontium is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2, according to the Jefferson Lab website. The noble gas configuration of this element is [Kr] 5s2, with [Kr] representing the electron configuration of krypton.
Strontium has an atomic number of 38, which means it has 38 protons. In a neutral atom, an equal number of protons and electrons cancel each other out, resulting in a net charge of zero. As a result, one neutral atom of strontium must have 38 electrons.
These electrons are arranged in energy levels around the nucleus. This element's electron configuration gives students an easy way to determine how the electrons in a strontium atom are arranged. There are two in the first energy level, eight in the second energy level, 18 in the third energy level, eight in the fourth energy level and two in the fifth energy level.Learn More
Carbon dioxide is a compound made up of the elements carbon and oxygen. Its chemical formula is CO2, which specifies that one molecule of CO2 contains one carbon atom and two oxygen atoms.Full Answer >
The Bohr model of a silicon atom includes notations for 14 protons and 14 neutrons in the nucleus plus designations for three concentric circles for electrons. The inner circle contains two electrons, the middle circles have eight electrons and there are four valence electrons on the outer circle. Electrons appear as small dots on the Bohr model.Full Answer >
Iron has two valence electrons. The atomic number or iron is 26, and it has 26 electrons and 26 protons. The electron configuration of iron is 1s22s22p63s23p63d64s2 or 2, 8, 14, 2 electrons per shell, so an atom of iron has two electrons in the outermost shell.Full Answer >
Lithium iodide is an ionic compound in which there is one lithium ion for every iodide ion. It has the chemical formula LiI. Lithium iodide is also sometimes called lithium(I) iodide.Full Answer >