The bond lengths and bond angles in the molecules of methane, ammonia and water are given below .This variation in bond angle is a result of (i) the increasing repulsion between hydrogen atoms as the bond length decreases (ii) the number of non-bonding electron pairs in the molecule (iii) a non-bonding electron pair having a greater repulsive force than a bonding electron pair Click hereto get an answer to your question ️ Bond angle present in methane (CH4) molecule is: As such, the bond angle in one is the same for all. Download now: http://on-app.in/app/home?orgCode=lgtlr (a) (10 points) Explain why the bond angle in methane is cos-6) 109.47º. Q. The first is based on high level ab initio calculations using the CCSD(T) treatment of electron and basis sets containing up to 365 contracted Gaussian functions. We also provide student loans to assist in the education of our members. Molecular Formula Name Structure Bond Length (Å) Bond Angle (°) Symmetry; CCl 2 F 2: dichlorodifluoromethane : C-Cl 1.74 ± 0.03 C-F 1.35 ± 0.03: ClCCl 109 ± 2 Methane has 4 bond pairs so the tetrahedron is symmetrical and the angle 109 degrees. The equilibrium structure of methane is determined by two different procedures. One Academy has its own app now. When sp 3 orbitals are formed, they arrange themselves so that they are as far apart as possible. So as to minimize repulsion, the molecule adopts a tetrahedral shape, hence bond angle becomes 109.5. with bond angle of 90, the molecule would not be very stable. This means there are four electron groups surrounding the central carbon. Ammonia has one lone pair that is entirely on the central atom and so exerts a greater leverage that pushes the bond pair in to 107 degrees. In coordinates where one of the C – H bonds is in the direction of i + J + k, an adjacent C – H bond is in the i - J - k direction. methane consists of four bonded pairs, i.e 4 C-H bonds. The methane molecule CH 4 has a carbon atom at the center of a tetrahedron and 4 hydrogen atoms at each of the vertices of a tetrahedron. Nothing changes in terms of the shape when the hydrogen atoms combine with the carbon, and so the methane molecule is also tetrahedral with 109.5° bond angles. That is a tetrahedral arrangement, with an angle of 109.5°. To maximize distance between the Hydrogen’s respective electrons, the H-C-H angle is 109.5 degrees. The vertices of a tetrahedron can be placed at the points (-1,1,1), (1, -1, 1), (1, 1, -1), and (-1, -1, -1). The shape of methane. Methane (CH4) has both a tetrahedral electronic and molecular geometry. Keep learning, keep growing. Find the bond angle of methane. 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