The reason it has 10 is because nickel is a transition metal, so the d and s electrons can participate in chemical bonding. Please share and/or link to this page if you find it useful or informative. 2. There are 118 elements in the periodic table. The chemical properties of a group are similar because they contain same number of valence electrons and configurations. If you would like to link to this page from your website, blog, etc., copy and paste this link code (in red) and modify it to suit your needs: echo Periodic Table of Elements: Nickel - Ni (EnvironmentalChemistry.com)- Comprehensive information for the element Nickel - Ni is provided by this page including scores of properties, element names in many languages, most known nuclides and technical terms are linked to their definitions.. NOTICE: While linking to articles is encouraged, OUR ARTICLES MAY NOT BE COPIED TO OR REPUBLISHED ON ANOTHER WEBSITE UNDER ANY CIRCUMSTANCES. The Aufbau principle predicts that the 4s orbital is always filled before the 3d orbitals, but this is actually not true for most elements! Prairie Dogs: A Threatened Species or Public Health Nuisance? Valence electrons are the electrons of an atom that can participate in chemical bonding. Each element has a unique atomic structure that is influenced by its electronic configuration, which is the distribution of electrons across different orbitals of an atom. For zinc, the 3d subshell is complete in all known compounds, although it does contribute to the valence band in some compounds. Cu has two more d electrons and the same number of s electrons as Ni. Electronegativity of Nickel is 1.91. 4. The nickel atom has two electron configurations, [Ar] 3d 8 4s 2 and [Ar] 3d 9 4s 1, which are very close in energy – the symbol [Ar] refers to the argon-like core structure. Cu has one more d electron and the same number of s electrons as Ni. The valence-shell configuration is 4s24p1 (Q) What are the configurations for the outer electrons of: a. tellurium, Z = 52, and b. nickel, Z = 28? the change in energy (in kJ/mole) of a neutral atom or molecule (in the gaseous phase) when an electron is added to the atom to form a negative ion. How would the last valence orbital be filled? Are there Realistic Dry-Cleaning Alternatives to Perc? Nickel Complete Electron Configuration 1s2 2s2 2p6 3s2 3p6 4 s2 3 d8 Abbreviated Electron Configuration [Ar] 3d8 4s2 Sources Chiefly found in pentlandite [(Ni,Fe)9S8] ore. Looking Good, Feeling Bad; or, What's the Problem with Perc? What is the electron configuration for Nickel in terms of the nearest noble gas? The oxides are then treated with an acid that reacts with the iron not the nickel. The reason it has 10 is because nickel is a transition metal, so the d and s electrons can participate in chemical bonding. Nickel has 2 electrons in its valence (fourth) shell and can lose 2 electrons or gain 6 more electrons to make it stable. Because nickel is a transition metal, the classic method of determining the number of valence electrons doesn't work. Who Is Alexa — and What Does Amazon's Virtual Assistant Say About the Future of AI? Nickel has eight electrons in the 3d orbital and two electrons in the 4s orbital, which means nickel has 10 total valence electrons. If you need to cite this page, you can copy this text: Kenneth Barbalace. 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