Note that oxygen needs two electrons to fill its valence orbitals (2s and 2p) and achieve the configuration of neon (1s22s22p6), which is the next noble gas. Keep in mind, electron configurations are most stable when they are filled or … You may need to download version 2.0 now from the Chrome Web Store. 4f^7 B. Also, the total number of electrons is 35 which is for bromine atom not ion. It's most stable ion is the bromide, Br-. Step 2: Write the ground-state electron configuration of the element. Atoms are more stable when they have no charge, or a small charge. It's most stable ion is Cs+ Electronic configuration = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 Strontium belongs to group 2. An atom may give, take, or share electrons with another atom to achieve a … So 4f^7& 4f^14 are more stable Copper ions usually exists in either the +1 or +2 forms. 4f^7 4f 4f^13 4f^14 ...” in Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions. Rb after losing 1 electron forms and attains most stable Kr configuration. © 2020 Education Strings, All rights reserved. The energy increases as we move up to the 2s and then 2p, … All noble gases have their subshells filled and can be used them as a shorthand way of writing electron configurations for subsequent atoms. Select one: a. the strontium ion b. the barium ion c. the xenon ion d. the krypton ion e. the calcium ion . Speed of visible light is greater 6) Which of the following electron configurations is most stable? A cold glass is left sitting outside on a hot day. Therefore we have (still incorrect) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 9 4s 2. If that's a stable atom, it'll be Neon. Want to get help with all your chem 132 tasks? 1. In that case, both would have the electron configurations of noble gasses, with a full valence shell. Performance & security by Cloudflare, Please complete the security check to access. Correct Electron Configuration for Copper (Cu) A. We can base our prediction on the observation that noble gas configurations are the most stable. Subscribe to bartleby learn! The elements that have fully filled orbitals are most stable, since they do not need to gain or lose electrons. The electron configuration of outer sublevels that are most stable is 4d up to the 5.5s up to the 1st This is electronic configuration of bromine atom not ion as there are 35 electrons. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Electronic configuration, also called electronic structure, the arrangement of electrons in energy levels around an atomic nucleus.According to the older shell atomic model, electrons occupy several levels from the first shell nearest the nucleus, K, through the seventh shell, Q, farthest from the nucleus. In any atom with two or more electrons, the repulsion between the electrons makes energies of subshells with different values of l differ so that the energy of the orbitals increases within a shell in the order s < p < d < f. Figure 1 depicts how these two trends in increasing energy relate. 4f C. 4f^13 D. 4f^14. (a) The Principle Quantum number, n defines the energy of an electron in an atom and the size of an orbital. Describe the events that must occur for the water droplets to form on the glass. The most stable ion formed by the given atoms will be an electron configuration that follows those of noble gases. Elements in other groups have partially filled valence shells and gain or lose electrons to achieve a stable electron configuration. 1s2 2s2 2 P6 C. 1s2 2s 1 D. 1s2 2s2 2p3 E. 1s2 2s2 2p6 3s2 3d10 How Many Moles Of Hydrogen Are Needed To Make 32 Moles Of Ammonia (NH3)? Step 3: Determine the most stable ion of the element. The +2, or cupric, ion is more stable than the +1 cuprous ion. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. 1s2 2s2 2p5 B. What is a Stable Electron Configuration? • 8) What is the most likely charge on an ion formed by an element with a valence electron configuration of n? Half filled and completely filled orbitals are more stable than any other configuration since they are more symmetrical and energy exchange Occurs readily. C. How does the speed of visible light compare with the speed of gamma rays, when both speeds are measured in a vaccum? The noble gases have the most stable electron configurations, and are known for being relatively inert. Remember that main group elements typically form ions that are most like their nearest noble gas. The most stable form of each of the elements will be the configuration that results in a noble gas configuration. Option A. 2. Answer to: Write the most stable electron configuration for the element Mo. Moreover, the most stable electron configuration possesses a full state of energy. Another way to prevent getting this page in the future is to use Privacy Pass. If it's a stable negative ion, it'll be either F- or O2-. However, their charges would be much higher. The first is the definition of the four quantum numbers (n, l , m_l, m_s). It would be Na 7- and Cl 7+, which is much less stable than Na + and Cl -. What materials are needed to find density of water. A) 1 2 2 B) 1 2 2 C) 1 2 D) 1 2 2 E) 1 2 2 7) What is the most likely charge on an ion formed by an element with a valence electron configuration of n n? The unpaired 4s electron allows copper to attract a magnetic field. The 1s orbital at the bottom of the diagram is the orbital with electrons of lowest energy. Therefore the Aluminium electron configuration will be 1s 2 2s 2 2p 6 3s 2 3p 1. How many moles of O2 are produced when 0.425 mol of KO2 reacts in this fashion. If it's for a stable positive ion, it’ll be Na+ or Mg2+ or Al3+. Question: Short Answer Which Of The Following Electron Configurations Is Most Stable? There are just a few rules/definitions to keep in mind in order to 'build up' atomic configurations properly. Please enable Cookies and reload the page. three everyday things that exist or occur because of science. Electron configuration was first conceived under the Bohr model of the atom, and it is still common to speak of shells and subshells despite the advances in understanding of the quantum-mechanical nature of electrons.. An electron shell is the set of allowed states that share the same principal quantum number, n (the number before the letter in the orbital label), that electrons may occupy. The electron configuration of the 4f energy sublevel is the most stable is 4f to the 14th power. Problem 9 Write out the full electron configuration for each of the following atoms and for the monatomic ion found in binary ionic compounds containing the element: The electron configuration 1s22s22p63s23p64s23d104p6 is the correct electron configuration for the most stable form of which ion? Both of the configurations have the correct numbers of electrons in each orbital, it is just a matter of how the electronic configuration notation is written (here is an explanation why). Electron configuration can predict the stability of an atom. Option D. This electronic configuration is wrong as 4d cannot be filled before 3d and 4p. Explain why materials with metallic lattice structures can be used to make wires and connections that conduct electricity in electrical circuits. Under which circumstances are kp and kc equal for the reaction aa (g) + bb (g) ⇌cc (g) + dd (g) ? Such elements, with fully filled outermost orbitals are known as noble gases. Cloudflare Ray ID: 6006c68509e50c75 ... ground state electron configurations. 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. Soon, water droplets form on the outside of the glass. Find an answer to your question “Which electron configuration of the 4f energy sublevel is most stable? When an electron moves from lower to higher energy level, the electron absorbs a quantum of energy Which of the following electron configuration of outer sublevels is most stable? Rb: Ground state configuration of Rb: The nearest noble gas is Kr. So sick of the electron configuration for the most stable eye on when they're an ionic compounds for each of the following. They all have 10 electrons in total, 8 valence electrons. 1. The noble gas configuration is known as the most stable configuration that an atom can achieve. When an atom’s all orbitals are filled, it becomes the most stable, thereby unreactive. The most stable electronic configurations for an atom occur in one of two ways: completely filling a subshell composed of more than orbital (eg, d 10) or exactly half-filling a subshell composed of more than orbital (eg, d 5) So the most stable electronic configuration for an atom of chromium is to have both its 4s and 3d subshells half-filled! A full valence shell is the most stable electron configuration. So in the case of aluminum, this is neon. Which electron configuration of the 4f energy sublevel is the most stable A. Aufbau principle the principle that states that an atom's electron configuration is developed by progressively adding electrons that assume their most stable conditions in electron orbitals with respect to the nucleus and the other electrons According to the rules of filling electron shells, copper should have a configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d9 instead, but it does not. atomic number - symbol - electron configuration. What minimum mass of H2SO4 would you need? So all of these are main group Um, uh, elements and their most stable ions. Answer. Based on the outer electron value above, Neon (Ne) has the most stable outer electron configuration because the outer electron is completely filled and it has octet structure. The energy of atomic orbitals increases as the principal quantum number, n, increases. Write electron configurations for the most stable ion formed by each of the elements $\mathrm{Rb}, \mathrm{Ba}, \mathrm{Se},$ and $\mathrm{I}$ (when in stable ionic compounds). Nature always is most stable in the lowest energy configurations. We’re being asked to determine the electron configuration of the most stable ions formed by Al, Ba, Se, and I.. To answer this, we need to do the following steps: Step 1: Determine the number of electrons in the neutral element. Your IP: 46.105.58.56 • What does the half-life of a radioisotope represent? Most stable electron configuration of : d. the krypton ion . If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. In other words, the valence shell with ns2 np6 electron configuration. Make sure you use examples. Everything is based on energy. 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