Since the cations occupy tetrahedral sites, the anioncoordination number must be eight. →Tetrahedral Connectivity →Edge sharing FCa 4 tetrahedra or edge sharing CaF 8 cubes 4 CaF 2 in unit cell Ca2+ Coordination number of cation = 4. No. You can study other questions, MCQs, videos and tests for NEET on EduRev and even discuss your questions like It is the arrangement of some of the more valuable precious metal tellurides and selenides among which is hessite (Ag2Te), the ore mineral of silver. The Questions and Answers of In Li2O, having the antifluorite structure, the coordination numbers for 2- ions Li+ ions respectively area)4 and 4b)4 and 8c)8 and 4d)6 and 6Correct answer is option 'C'. 2), rutile structure (TiO. Thus the number of CaF 2 units per unit cell is 4. By continuing, I agree that I am at least 13 years old and have read and soon. In which of the following structures coordination number for cations and anions in the packed structure will be same? The coordination number of cations is 4 and that of anions is 8. The most important of these compounds are the fluorite/ antifluorite structure (CaF. 2), cadmium dichloride structure (CdCl. Neuron Structure and Function | Control and Coordination |, Coordination chemistry - Coordination Compounds. Antiflourite structure has FCC packing of anions. over here on EduRev! In antifluorite, of formula A2X, the coordination numbers of cation and anion must be in the ratio of 1:2. Try it now. For antifluorite structure. Examples of the antiflurite structure are K 2 O, Li 2 O, Na 2 O, K 2 S, and Na 2 S. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. Can you explain this answer? Can you explain this answer? Since the cations occupy tetrahedral sites, the anion coordination number must be eight.. Antifluoride structure has opposite arrangement of inos than fluorite structure. Since the cations occupy tetrahedral sites, the anion coordination number must be eight.. Antifluoride structure has opposite arrangement of inos than fluorite structure. Can you explain this answer? the coordination number of the cations must be twice that of the anions. This discussion on In Li2O, having the antifluorite structure, the coordination numbers for 2- ions Li+ ions respectively area)4 and 4b)4 and 8c)8 and 4d)6 and 6Correct answer is option 'C'. is done on EduRev Study Group by NEET Students. In order to see this, it is convenient to redefine the origin of the unit cell to coincide with a cation rather than an anion. No. Li 2 NH (antifluorite) & LiNH 2 (defect antifluorite) Group 1 Elements. The cations and anions are arranged in alternate form in- (a) metallic crystal (b) ionic crystal semi – conductor (c) covalent crystal (d) crystal. All tetrahedral sites are filled with cations. For antifluorite structure coordination number of cations and anions are respectively. In the fluorite structure the coordination number of `Ca^(2+)` ion is . Can you explain this answer? Answers of In Li2O, having the antifluorite structure, the coordination numbers for 2- ions Li+ ions respectively area)4 and 4b)4 and 8c)8 and 4d)6 and 6Correct answer is option 'C'. The Questions and 1,2 The difference between wurtzite and zincblende lies in the different arrangements of layers of ions. agree to the. Antifluoride structure has opposite arrangement of inos than fluorite structure. The antifluorite structure is the opposite arrangement, with anions in the fcc array with coordination number 8 and cations in the tetrahedral holes with coordination number 4. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. of F ions = 8 (within the body)×1 = 8 . Each unit cell has 4 calcium ions and 8 fluoride ions as explained below . For rock salt and zinc blende, x = y and anions and cations have the same CN. Formula A xXy, the coordination numbers (CNs) of A and X must be in the ratio of y:x. Can you explain this answer? Can you explain this answer? The surrounding geometry of Ca2+ ion is tetrahedral and of F– is cubical in nature. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. Fluorite / antifluorite structure (CaF. In antifluorite (A2X), since the cations occupy tetrahedral sites, the anion CN must be 8. are solved by group of students and teacher of NEET, which is also the largest student Correct answer is option 'C'. Apart from being the largest NEET community, EduRev has the largest solved In Li2O, having the antifluorite structure, the coordination numbers for 2- ions Li+ ions respectively area)4 and 4b)4 and 8c)8 and 4d)6 and 6Correct answer is option 'C'. Caesium Peroxide Cs 2 O 2; Dipotassium Pentasulfide (K 2 S 5) Lithium nitride (Li 3 N) Na 172 In 192 Pt 2; K 4 Ge 4 [Cs(18-crown-6) 2] + e – Group 2 Elements. 1. If the answer is not available please wait for a while and a community member will probably answer this 2 The coordination number, the number of of electron pairs donated to a metal by its ligands, for both zinc an sulfur is four. 2) and the cadmium diiodide structure (CdI. Dear student...In antifluorite, of formula A2X, the coordination numbers of cation and anion must be in the ratio of 1:2. The chemical formula is of the type M 2 In an ionic crystal, both cations and anions are bound together by ……….. An ionic compound is made-up of A cations and B anions. Other articles where Antifluorite structure is discussed: sulfide mineral: …eight metal cations—is called the antifluorite structure. Coordination number of anion = 8 Apne doubts clear karein ab Whatsapp (8 400 400 400) par bhi. 2. →Cubic Anion Coord. Fluorite (CaF2) and Antifluorite (Li2O) Fluorite: CCP of Ca2+with all T+and T-holes filled with F-Antifluorite: CCP of O2-with all T+and T-holes filled with Li+ Coordination= 8, 4 (fluorite) Cation Coord. The coordination number of Ca2+ is eight while each F– ion is surrounded by four calcium ions. is done on EduRev Study Group by NEET Students. 4. 2) Dear student...In antifluorite, of formula A2X, the coordination numbers of cation and anion must be in the ratio of 1:2. of Ca +2 ions = 8(at corners)×1/8 + 6 (at face centres)´1/2 . The Coordination number of Ca +2 ion is eight and that of F- ion is four, this is called 8:4 Coordination. Nov 25,2020 - In Li2O, having the antifluorite structure, the coordination numbers for 2- ions Li+ ions respectively area)4 and 4b)4 and 8c)8 and 4d)6 and 6Correct answer is option 'C'. Question bank for NEET. It is Therefore, the coordination number ratio of Ca2+ and F– is 8:4. Calcium Carbonate – CaCO 3 – Polymorphs; Group 14 Elements. The other common examples of this structural prototype of are CuF2, BaF2, PbF2, HgF2, SrF2. | EduRev NEET Question is disucussed on EduRev Study Group by 135 NEET Students. community of NEET. Therefore, four sulfur atoms surround each zinc atom and four zinc atoms surround each sulfur atom. * A clear view: The cation at X(4 1 4 1 4 1) may be chosen as the new origin 2).