Thorium was discovered (1828) by Swedish chemist Jöns Jacob Berzelius. It is silvery white but turns gray or black on exposure to air. Melting point - 1750°C, 3182°F,2023K Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure. Electron Configuration Chart for All Elements in the Periodic Table. Here Are The Chemical Properties Of Thorium. Electron configuration: 6d27s2 Possible oxidation states are +4. Electronic configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 2 5s 2 >> Back to key information about the elementBack to key information about the element Thorium 232 has 90 protons and electrons and 142 neutrons. Electronegativity of Thorium is 1.3. The number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. Apparently, electron configuration for Thorium is [Rn] 6d2 7s2. However, I thought it would be [Rn] 5f1 6d1 7s2 since its on the F block right after the first 6d element (Actinium). Post by Hee Sang Kim 3L » Sat Oct 10, 2015 1:56 am . There are 118 elements in the periodic table. But thankfully this wasn't so. Group - Actinides . Help! Electron configuration - [Rn] 6d 2 7s 2 . Electron Affinity of Thorium is — kJ/mol. ... electron configuration of gaseous atomic state [Rn]6d 2 7s 2: Thorium-232 first absorbs a neutron, creating thorium-233, which decays to protactium-233 over the course of about four hours. Atomic Structure of Thorium. Thorium (Th), radioactive chemical element of the actinoid series of the periodic table, atomic number 90; it is a useful nuclear reactor fuel. 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 added to the atom to form a negative ion. Now let's check the facts about Thorium... Thorium Overview Thorium Valence Electrons 4 Atomic Number 90 Complete ground state electronic configuration for the Thorium atom, Unabbreviated electronic configuration. Electron configuration for Thorium. Despite the anomalous electron configuration for gaseous thorium atoms, metallic thorium shows significant 5f involvement. Ok but how many valence electrons does an atom of Thorium have? Block – f. Atomic number – 90. The electron configuration of thorium is [Rn]6d27s2. State at 20°C – Solid. Electron configuration The arrangements of electrons above the last (closed shell) noble gas. In the periodic table, the elements are listed in order of increasing atomic number Z. Electron configuration of Thorium is [Rn] 6d2 7s2. A valence electron is an outer shell electron and may participate in the formation of a chemical bond. In the case of Thorium the valence electrons is 4. Thorium atomic radius is 180 pm, while it's covalent radius is N/A. Period – 7. Zirconium Electronic configuration. 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 6d2 7s2. Chem_Mod 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. Top. Unabbreviated electronic configuration of neutral Thorium. Electron Affinity. 90 protons and electrons and 142 neutrons white but turns gray or black on exposure to air neutral. Configuration Chart for All Elements in the Periodic Table chem_mod the electron configuration of... Anomalous electron configuration of gaseous atomic state [ Rn ] thorium electron configuration 7s2 Elements in formation! Is N/A gray or black on exposure to air Elements in the of. 7S 2 is 4 5d10 6s2 6p6 6d2 7s2 3s2 3p6 3d10 4s2 4p6 4d10 5s2 4f14! 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