This is the maximum distance the atoms can be placed away from each other. If you change any of the angles, some of the atoms will be closer together and will experience steric repulsions. By placing the atoms 109.5 degrees apart, you minimize steric repulsions and free energy. ------------------------------------------------------ Edit (AY12345): You know the shape of the molecule. Draw it out. Use a little trigonometry, and the angles can be calculated mathematically.
It is a tetrahedral. When making a Lewis structure, you will see 4 effective bonds. Then use a VESPR chart, and you will find it is a tetrahedral.
All of the hydrogens on methane are evenly spaced apart at 109.5 degree bonds. This makes the geometry tetrahedral.
whenever carbon atom forms four covalent bonds the basic structure is tetrahedral because carbon in such cases is sp3 hybridized.
Tetrahedral. It is because in this molecular the central atom S have four bonds and no lone pairs. So the shape must and must be what I said.
Tetrahedral. Si can [and will naturally try to] create four bonds with its electrons to fill its valence shell. The other four atoms in this molecule have a charge of -1 each, so all four of these atoms will bond directly with Si and space themselves out to maximum distance of each other. Four electron domains = tetrahedral.
Carbon has 4 bonds, bonded electrons repel one and other, so the tetrahedral shape is formed because the covalent bond between the carbon and the hydrogen causes a repulsion to the other bonds which themselves repulse. Therefore the bonds will repulse one and other until they are the maximum possible distance from each other. so the bond angle is the maximum it can be, in this case 109.5 degrees.
Yes. Si bonds are tetrahedral.
CCl4 shape is circular. This is determined by the Valence Shell Electron Pair Repulsion theory (VSEPR). The repulsion of the molecule determines the shape of it. CCl4 has a tetrahedral shape, owing to four bond pairs of electrons repelling each other to positions of maximum separation and minimum repulsion. The angle between bonds is 109.5 degrees.
tetrahedral
109.5
Water is usually described as "bent". The angle between the oxygen-hydrogen bonds is about 105 degrees; the lone pairs "push" the hydrogens closer together than a perfect tetrahedral geometry (109.4 degrees).
Bayer's strain theory accounts for the strain in bonds within a ring compound. In a tetrahedral bond angle is 109.28 degrees. If none of the bonds are 3 in a ring chain isomer, then each angle will be of 60 degrees that is 109.28 degrees. That means there is a lot of strain. Strain order: 3>4>5~6>7>8>9
the presence or absence of double bonds between the carbon atom and other atoms
The molecule is H3C-CH3. At each C center the bonds are tetrahedral. There is free rotation about the C-C single bond
tetrahedral
tetrahedral
It is a tetrahedral. When making a Lewis structure, you will see 4 effective bonds. Then use a VESPR chart, and you will find it is a tetrahedral.