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A special kind of Sub Level of x=44=Your MOM

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s:2, p:6, d:10, and f: 14

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Q: What are the letter designations for the first four sub levels with the maximum number of electrons that can be accommodated in each sub level?
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The nucleus and all electrons in an atom except the valence electrons?

The nucleus and all electrons in an atom except the valence electrons is known as the elemental symbols.


What is 1s2 2s2 2p6 3s2?

The number and letter combinations given are the electron orbital configurations of all of the electrons in a neutral atom of magnesium.


How many valance electrons are in an atom that has 15 electrons?

Group #15 has 5 valence electrons


How are electrons distributed within the electron shells of an atom?

An electron shell may be crudely thought of as an orbit followed by electrons around an atom's nucleus. It must be emphasised that this crude model has been superseded by quantum theory in specifying the electron behaviour. However it did give an understanding of how the atoms of the periodic table are configured. The electron shells are labelled K, L, M, N,O,P, and Q, moving outwards from the nucleus. Each shell is composed of subshells labelled s,p,d, and f. The K shell has one subshell, the s. The L shell has two subshells, s and p. the M shell has three subshells s,p, and d. The N shell has four subshells, s,p,d, and f.Further rules apply: each s subshell can hold up to two electrons, each p subshell up to six, each d subshell up to ten, and each f subshell up to fourteen.Thus the overall effect is: K shell can contain up to two electrons, L shell up to eight, M shell up to eighteen, and N shell up to thirty two. Subsequent shells can hold up to thirty two, no known element has more than 32 electrons in any one shell.This model of the atom is generally called the Bohr model after the physicist ,who developed the model in the 1920's.The reasons for this electron configuration are beyond this answer, but there are articles in Wikipedia if you want to try to understand this. See 'Electron Configuration' for example and also follow other links given.


How do you find the electron configurations of ions?

There are many types of rules for electron configuration. Look at the aufbau principle and Hund's rules.In each orbital there is a maximum of two electrons.In a "s" orbital, there are two electrons.In a "p" orbital, there are three sub-orbitals, each containing two electrons. (Thus containing 6 electrons)In a "d" orbital, there are five sub-orbitals, each containing two electrons. (Thus containing 10 electrons)In a "f" orbital, there are seven sub-orbitals, each containing two electrons. (Thus containing 14 electrons)Look at the aufbau diagram I linked below.The coefficient represents the orbital. Do not use mathematics to try to solve the configurations.1s2 2s2 2p6 : Neon's Electron ConfigurationThe letter following the coefficient describes which type of orbital it is, being s,p,d, or f.The superscript denotes the number of electrons it contains. If you add 2, 2, and 6, you would get 10, Neon's atomic number.