Element. (a) What is the atomic number of this element? Describe 1 way the wave mechanical model is similar to the Bohr model They are similar because they using the bohr model it was concluded that electrons have properties like … This is a good question. The Electronic Configurations … Electric Dot Diagram . Metals generally have anywhere between 1 to 3 electrons excess of a closed shell. Electron configuration of an atom represents that how the electrons are distributed in its atom among the orbits (shells) and sub shells. The electronic configuration is 2, 8, 1. Please select your course. Based on the periodic table, "O" is atomic number 8, which means it has 8 electrons. H. Helium +2 2) 1s 2. I assume you mean that orbital 1 has 2 electrons, orbital 2 has 8 and orbital 3 has 8. Related questions 0 votes. If you don’t have a chart, you can still find the electron configuration. 1 decade ago. 4. Add them to get the atomic number. Excited State - 1s2 2s2 2p5 3s2 : 2,7,2 Find an answer to your question “Which electron configuration represents an atom in an excited state? SUMMERY (SUMMARY) OF ELECTRON CONFIGURATIONS 11 Na 2-8-1 2-8-1 THERE ARE TWO ELECTRONS IN SHELL N=1 ( lowest energy level in Na) THE GROUND STATE CONFIGURATION: 1) Given on periodic table. This electronic configuration can also be shown as a diagram. Use the element blocks of the periodic table to find the highest electron orbital. 2) Inner shells are full ( except transition metals, where the last two shells may be incomplete). (Atomic numbers are given in parentheses.)? Expert Answer: (a) Period no : 3. Alternatively, there are 3 shells of electrons so the element is in period 3, and the last shell has 7 electrons so it is in Group (17 or VIIA). Electronic Configuration Of Metals And Non - Metals: Metals are elements that give off “free” electrons. Z Element Symbol GCSE A-level Short Term symbol s p d f; 1. hydrogen 0 1. vica. 3) Most stable, lowest energy configuration. Text lists sorted by: Value | Atomic Number | Alphabetical: Plots: 3D Live | Shaded | Ball | Crossed Line | Scatter | Sorted Scatter: Log scale plots: 3D Live | Shaded | Ball | Crossed Line | Scatter | Sorted Scatter: Good for this property: Atomic Number: Point to the graph to see details, or click for full data on that element. Periodicity. 3. The first shell only has 1 orbital (n=1 and l=0) and accommodates 2 electrons. The electronic configuration of metal 'A' is 2,8,1 and that of metal 'B' is 2,8,2 . 2-8-7-3 4. Based on electron configuration of atom, we can predict that whether two substances will … The first twenty elements 1 2 13 14 15 16 17 18; 1: hydrogen 1 : helium 2: 2: lithium 2.1: beryllium 2.2: boron 2.3: carbon Electron moves from the 2p orbital into the 3s orbital. Among the options given which includes Nitrogen, Fluorine, Phosphorus and Argon, chlorine is chemically similar to fluorine. Advertisement Remove all ads. Non-metals on the other hand have similar number of electrons … The electronic configuration of an element X is 2, 8, 1 and element Y is 2, 8, 18, 8, 1. asked Mar 7, 2019 in Chemistry by Anjal ( 76.8k points) periodic table (d) The correct electronic configuration of sodium is 2, 8, 1 (electronic configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals) (c) The valency of X is 2 because it can acquire stable gas configuration by losing 2 electrons. Which of the two metals is more reactive? Time Tables. Which electron configuration represents an excited state for an atom of calcium with its ground state being 2-8-8-2? He. Syllabus. Give reasons. Get your answers by asking now. The last electron will go in the 3 rd shell and will be a part of the s orbital again. Concentration. This means that cesium, with a 6s 1 valence electron configuration, is much larger than lithium, with a 2s 1 valence electron configuration. Net Ionics. Which one will have higher electron affinity? Five 3 d orbitals are filled by the next 10 elements, the transition metals, followed by three 4 p orbitals. Key to … … Still have questions? (B) Which of These Elements Are Non-metals? Electronic configuration of 'X' is 2, 8, 8, 2. Electron Configuration. The electron configuration of sodium is [Ne]3s1. Group no : 17 (b) It is a non-metal because it accepts electron to … The first few atomic orbitals are 1s, 2s, and 2p. Correct electron configuration for this atom of Magnesium is: 1s2 2s2 2p6 3s2 . (c) Identify the element and what will be its valency? As the electronic configuration of the given atom is 2,8,7 it is inferred that the atomic number of element is 17 (2+8+7). Hydrogen +1 1) 1s 1. 2-8-1. Consequently, the electron configuration of potassium, which begins the fourth period, is [Ar]4s 1, and the configuration of calcium is [Ar]4s 2. 0 1. When an excited electron in an atom moves to the ground state, the electron . 2-8-8-2. Electric Configuration . Gases, Liquids, and Solids. Each orbital can hold 2 electrons maximum, and there are 2l+1 of each type of orbital (s,p,d,f,g,...), where l = 0 corresponds to an s orbital, l = 1 means p orbital, and so on. Emits energy as it moves to a … 1) The electron configuration of the element with atomic number 15 a) Phosphorus b) 2,8,5 c) 5,8,2 d) 2.1 e) P 2) The electron configuration of Oxygen a) 2,6 b) 8,2 c) 2,8,8,2 d) O 3) The electron configuration of Sodium a) Na b) 23 c) 2,8,2 d) 2,8,1 4) The electron configuration o Hydrogen a) 0,1 b) H c) 1 d) 2,8,1 5) The electron configuration of the element with atomic … The first 2 electrons form a part of the s orbital and the other 6 of the p orbital (n=2 and l=1). Click hereto get an answer to your question ️ Element A has electronic configuration 2,8,1 and B has 2,8,7. 3. 1 answer. Important Solutions. There are 118 elements in the periodic table. 1 electron occupies the third shell This electronic configuration can be written as 2.8.1 (each dot separates one shell from the next). Which element has an atom with the electron configuration 2 8 8 2 Question Papers. So, the configuration for neutral "O" atom is: 1s^2 2s^2 2p^4 where … Final Review. Lv 4. Electron Configuration Chart for All Elements in the Periodic Table. Bohr Structure . Ground State - 1s2 2s2 2p6 3s1 : 2,8,1. There are a total of 8 electrons in the "second shell" but the p orbital can only hold 6, as stated above. To create the electron arrangement for an atom, we list the number of electrons in each energy level and separate them by commas. N(7) F(9) P(15) Ar(18) Click hereto get an answer to your question ️ An atom has electronic configuration 2,8,7 . Textbook Solutions. Lithium … B) 12 # of electrons = # of protons, so if there are 2+8+2=12 electrons, then there are 12 protons. Chlorine and element x have similar chemical properties.An atom of element x could have an electron configuration of a)2-2 b)2-8-1 c) 2-8-8 d)2-8-18-7 (b) It is metallic or non-metallic? Energy is emitted. Electron Configuration. The effective nuclear charge changes relatively little for electrons in the outermost, or valence shell, from lithium to cesium because … 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. Thermochemistry. 2-8-7-2 3. Reaction Rates. The electron configuration of this is 1s2 2s2 2p6 3s2 3p6 (2+2+6+2+6=18) 18 is … 1. Try a smart search to find answers to similar questions. The electronic configuration will then … (1) 2-7 (3) 2-8-1 (2) 2-6-2 (4) 2-8-8-2 ...” in Chemistry if the answers seem to be not correct or there’s no answer. 2+8+7 = 17. Figure 2.8.1: Plots of Radial Probability as a Function of Distance from the Nucleus for He, Ne, and Ar. 2: 8: 1 12 Mg ... Ce site est également cité dans le CRC Handbook comme source du paragraphe 1, sous-paragraphe Electron Configuration of Neutral Atoms in the Ground State. (b) To which of the following elements would it be chemically similar? Midterm Review . Write their reaction with dilute hydrochloric acid. Which change occurs when an atom in an excited state returns to the ground state? Question Bank Solutions. Asked by Topperlearning User | 27th May, 2014, 09:27: AM. What is the correct electron configuration of element Se in the ground state? Electron Shell Configuration of the elements. An up-to-date periodic table with detailed but easy to understand information (a) X belongs to period 4 because it has 4 energy shells. This can be seen in the example given for sodium: 2,8,1. (a) To which group and period of modern periodic table does it belong? An element has electronic configuration 2, 8, 7. 2. 2-8-7-1 2. 4) Lower shell numbers are … The electron configuration states where electrons are likely to be in an atom. (b) Since X has 2 valence electrons, so it belongs to group no. chlorine the electron configuration of an element shows how many electrons are present. an electronic configuration 2,8,1 what is the period and group of the element - Science - Periodic Classification of Elements The electron configuration of an atom is very important as it helps to predict the chemical, electrical and magnetic behavior of substance. The second shell has 8 electrons and 2 orbitals. Radius, Ionization Energy, and Electronegativity. Electronic configuration of selenium: [Ar]4s2.3d10.4p4 The Electronic Configurations of Three Elements A, B and C Are as Follows: A 2, 8, 1 B 2, 8, 7 C 2, 4 (A) Which of These Element is a Metal? Yes, since you’ve learned that the maximum number of electrons in each shell is given by 2n², you would expect the 3rd. Trace to where the period number and group number intersect on the periodic table and … shell to be able to take up to 18 electrons so that 2.8.9 would be perfectly reasonable. Concept Notes. Thus element with atomic number 17 is Chlorine. Gas Laws. Sodium Draw the Bohr Model Electron configuration: 2-8-1 Draw the Lewis Dot Structure # of valence e-: 1 Na Na Draw Sodium with a +1 charge Number of electrons gained/lost: 1 electron gained. It is because chlorine and Fluorine belongs to same group 17 and they are called as …