The electron configuration of calcium is 1s² 2s² 2p? 3s² 3p? 4s² which can be shortened to [Ar] 4s². The short form uses the noble gas simplification, which is a method to avoid rewriting the entire electron configuration that calcium shares with argon.Know More
In order to write the electron configuration of an element, it is necessary to know how many electrons are present in the element as well as the order in which electron shells fill up. Calcium has an atomic number of 20, which means that in elemental calcium atoms there are 20 electrons. There can be fewer electrons, but that occurs in calcium ions.
There are four different electron subshells that can have a set number of electrons in each one. The different sub shells are s, d, p and f. The s subshell can have up to 2 electrons, while p can have up to 6, d can have up to 10 and f can have 14 electrons.
The order of shells and subshells is as follows: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s.
By using the order of these subshells, the electron configuration of calcium can be determined by filling each subshell in turn until all 20 electrons are accounted for. This technique can be used to determine the electron configuration of any element.Learn more in Atoms & Molecules
The electron configuration of uranium is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f3 6s2 6p6 6d1 7s2. Condensed, the standard electron configuration can be abbreviated as [Rn] 5f3 6d1 7s2 to denote only those levels with valence electrons.Full Answer >
The electron configuration of arsenic is [Ar] 4s2 3d10 4p3. It exists in many forms. Allotropes of arsenic are yellow, black and gray, according to About.com. The gray allotrope is the most common form of elemental arsenic and a conductor of electricity. In the other colors, arsenic is a poor conductor of electricity.Full Answer >
The electron configuration of bromine is 1s2 2s2p6 3s2p6d10 4s2p5, which can be shortened to [Ar] 4s2 3d10 4p5. The electron configuration indicates that bromine has a total of 35 electrons.Full Answer >
The electron configuration for Fe2+ is 1s2 2s2 2p6 3s2 3p6 3d6. Due to its plus two charge, the electron configuration for Fe2+ contains two fewer electrons than the electron configuration for Fe, which is 1s2 2s2 2p6 3s2 3p6 3d6 4s2.Full Answer >