How many electrons are in the outer shell of sulfur?
So for the element of SULFUR, you already know that the atomic number tells you the number of electrons. That means there are 16 electrons in a sulfur atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and six in shell three.
Neutral sulfur has 16 electrons because its atomic number is 16. Sulfur has two electrons in the 1s orbital, two electrons in the 2s orbital, and six electrons in the 2p orbitals.
- 2 electrons
- You can get the valence electrons in an atom's electronic arrangement by consulting the periodic table: The Group 1 atoms have 1 valence electron. The Group 2 atoms have 2 valence electrons. The Group 3 atoms have 3 valence electrons.
- Elements in the first row are filling their 1s orbitals. Since hydrogen is the first element, its electron configuration is 1s1 . It has only one electron in its valence shell. Valence electrons are the outermost electrons or electrons in the largest energy level.
The number of valence electrons are equal to the number of electrons in the outermost shell of the atom. The atomic number of sulphur is 16, and therefore the sulphur atom has 16 electrons in its orbits. The first shell can have a maximum of 2 electrons, and the second shell a maximum of 8 electrons.
- The first periodic table in the "rows and columns" form we see today was invented by Dmitri Mendeleev in 1869. It included the properties of all of the known elements of that time. The periodic table has long-since filled in Mendeleev's gaps and has added new elements. It has even changed the weights of other elements.
- Cobalt (Co) has an atomic number of 27, which means it has 27 electrons and protons. Shells hold up to two electrons in the first and eight electrons in the outer shells. So cobalt's electron configuration with 27 electrons should look like this: 2-8-8-8–1. However, each shell is made up of orbitals, s, p, d, e, f, …
- Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus.
Nitrogen is found to have either 3 or 5 valence electrons and lies at the top of Group 15 on the periodic table. It can have either 3 or 5 valence electrons because it can bond in the outer 2p and 2s orbitals. Compounds of nitrogen are found in foods, explosives, poisons, and fertilizers.
- Valence electrons are the number of electrons present in the outermost shell of an atom. The last shell of a chlorine atom has 7 electrons in it. Therefore, there are 7 valence electrons in an chlorine atom.
- why sodium has valency 1 and chlorine also 1? Sodium has atomic mass 23, atomic number 11. Chlorine has atomic mass 35 ,atomic number 17. Both Na and Cl require 1 electron either to loose or to gain ,so they can attain stable configuration.
- In the case of a metal, its valency is also equal to the number of chlorine atoms with which its one atom combines to form its normal chloride. Chromium forms two normal chloride in the oxidation states +2 and +3, and their chemical formulae are CrCl2 and CrCl3.
Updated: 2nd October 2019