aluminum valence electrons Thus, it contains 13 electrons. Chemical Properties of Aluminum. Asked 11/12/2014 9:23:20 AM. That means that it has 13 protons. Aluminum trichloride (AlCl 3), aluminum hydride (AlH 3), and aluminum hydroxide (Al(OH) 3) indicate a valence of three for aluminum, with six valence electrons in the bonded molecule.However, the stability of aluminum hydride ions (AlH 4 –) indicates that Al can also support an octet of valence shell electrons. 3. Electronegativity (Pauling scale) The tendency of an atom to attract electrons towards itself, expressed on a relative scale. To balance out this positive charge, it needs 13 electrons. The charge of an aluminum ion is typically 3+. This answer has been confirmed as correct and helpful. Question. s. Ourmine|Points 10| Log in for more information. Electron Affinity – Aluminium. 0 Answers/Comments. Valence Electrons: 3s 2 p 1 Electron Dot Model. The electron configuration for Aluminum is 1s 2 2s 2 2p 6 3s 2 3p 1. The other two are +1 and +2. Maths. These electrons fall into energy levels. Therefore the Aluminium electron configuration will be 1s 2 2s 2 2p 6 3s 2 3p 1. The halogens all have seven valence electrons. Electron affinity of Aluminium is 42.5 kJ/mol. Edited by jeifunk [11/12/2014 9:49:55 AM], Confirmed by jeifunk [11/12/2014 9:49:56 AM] The ground state electron configuration is [Ne]3s 2 3p 1. Aluminum has three valence electrons. The most common one is +3. Aluminum has an atomic number of 13. It is these "free electrons" that allow metals to conduct an electric current. Electrical conductivity in metals is a result of the movement of electrically charged particles. Compounds of aluminum follow similar trends. One +3 oxidation state for Aluminum can be found in the compound aluminum oxide, Al 2 O 3. Its outermost shell is 3 and thus has 3 valence electrons from subshells 3s and 3p. 2 of them fall into the first energy level and 8 fall into the second energy level. Video: Aluminium Electron Configuration Notation The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. Aluminum with 13 electrons has a configuration of {eq}\rm \rm 1s^2~2s^2~ 2p^6~3s^2 ~3p^1 {/eq}. Oxidation States. Aluminum #s^2p^1# has 3 valence electrons and an oxidation state of +3 or #Al^(+3)# Oxygen #s^2p^4# has 6 valence electrons and an oxidation state of -2 or #O^(−2)# The common multiple of 2 and 3 is 6. Electron affinity The energy released when an electron is added to the neutral atom and a negative ion is formed. Updated 11/12/2014 9:49:56 AM. In chemistry and atomic physics, the electron affinity of an atom or molecule is defined as: the change in energy (in kJ/mole) of a neutral atom or molecule (in the gaseous phase) when an electron is … This is because the element’s atomic number is 13, reflecting the fact that it has 13 electrons and 13 protons. Aluminum has three oxidation states. The atoms of metal elements are characterized by the presence of valence electrons, which are electrons in the outer shell of an atom that are free to move about. When the charges are equal and opposite the atoms will bond as #Al_2O_3#. The valence shell of aluminum has three electrons, and per the octet rule, these three electrons are lost resulting in just 10 electrons and 13 protons.Aluminum then has three excess protons so the charge of a base aluminum ion is 3+. We will need 2 aluminum atoms to get a +6 charge and 3 oxygen atoms to get a -6 charge. Which element has the fewest valence electrons available for bonding?