What is the electron configuration of Sr2+? - Socratic
2015年10月17日 · Strontium is atomic number 38 so its electron configuration can be written: #2.8.18.8.2# In orbital notation this is: #1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(6)5s^(2)# The noble gas shorthand notation is: #[Kr]5s^(2)# When strontium forms a 2+ ion the 2 outer #5s# electrons are lost so #Sr^(2+)# …
What is the electron configuration for As? - Socratic
2016年6月16日 · The complete electron for a neutral arsenic atom is: "1s"^2"2s"^2"2p"^6"3s"^2"3p"^6"3d"^(10)"4s"^2"4p"^3 Its shorthand electron configuration is: ["Ar"]"3d"^(10)"4s"^2"4p"^3 As is the chemical symbol for the element arsenic. Its atomic number is 33, which is the number of protons in the nuclei of its atoms. In a neutral atom, the number …
Which one of the following ions is iso-electronic with krypton? (a)
2015年4月11日 · The answer is e) Sr^(2+) For an ion to be isoelectronic with an atom (or with another ion), it must have the same number of electrons surrounding its nucleus. A quick examination of the periodic table will show that krypton, Kr, is located in period 4, group 18, and has an atomic number equal to 36. This means that a neutral krypton atom has 36 electrons …
What is the electron configuration for S^(2-) ion? - Socratic
2016年3月24日 · "S"^(2-):1s^2 2s^2 2p^6 3s^2 3p^6 A good starting point when looking for the electron configuration of an ion is the electron configuration of the neutral atom. In your case, the neutral atom is sulfur, "S", which is located in period 3, group 16 of the periodic table. Sulfur's has an atomic number equal to 16, which means that a neutral sulfur atom has a total of 16 …
Electron Configuration - Chemistry - Socratic
When looking at electron configuration, your fill order of electrons is: 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s. etc. Group 1A (1), the alkali metals all end is s1. What period the element is in determines the 1st number. Example: H ends in 1s1 (even though H is not a metal, it resides in this group because it also has one valence electron)
What is the electron configuration of Cl-? - Socratic
2015年11月11日 · 1s^2 2s^2 2p^6 3s^2 3p^6 Based on the periodic table, the atomic number (Z of chlorine is 17. Since the atomic number is always equal to the number of protons or Z = number of protons and in ground state (no charge), the number of protons is equal to the number of electrons, then Z = number of protons = number of electrons (ground state) Therefore, the …
What electron configuration represents an excited state?
2014年7月26日 · An excited state means that (typically) the valence electron has moved from its ground state orbital (i.e. lowest available energy) to some other higher energy orbital. So any electron configuration in which the last electron (again, the valence electron) is in a higher energy orbital, this element is said to be in an excited state. For example, if we look at the ground …
What element has the electron configuration - Socratic
2015年12月20日 · Notice that the given electron configuration shows that this element has 2 electrons located in the 5p-subshell. This tells you that you're looking for an element located on the fifth row of the p-block, two groups in, since every group corresponds to one electron. A quick look in the periodic table will reveal that element "X" is actually tin ...
What is the electronic configuration of strontium? - Socratic
2018年6月21日 · Well, you gots an alkaline earth from the fifth Period...and so the valence electrons are 5s^(2)... And so for Z=38 (from where did I get that number?) we gots 38 electrons to distribute....
What is the electron configuration of the gallium ion?
2016年6月8日 · The electron configuration for Gallium, Ga is 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^1 Gallium, Ga has 31 protons and 31 electrons. The superscripts represent the electrons present in each region of the periodic table. The sum of these superscripts should equal the atomic number for a neutral atom. The last electron is in the 4th period, in the p region and the …
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