Step-by-step explanation:
The shape of a molecule depends on whether the central atom has a lone pair and the number of atoms surrounding the central atom. A lone pair is a pair of electrons that do not form part in bonding.
Answer:
1. CCI4 has four bonds, therefore the bonds repel each other to maximum positions and froms a tetrahedral shape.
2. CIO2- has a triatomic shape because of the bent.
3. XeF2 has two bonds and therefore they bond on the sides creating a linear shape for the molecule.
4. XeOF4 has a square pyramidal shape beacuse Xe makes asymmetrical bonds with O and F.
5. HCN has a linear shape because H and N are placed 180 degrees Celsius apart.
6.ClO3- has a pyramidal shape because it has a lone pair and forms 3 bonds with O.
7. XeO4 has a tetrahedral shape because the bonds repel each other.
8. OF2 has a bent shape because it has lone pairs.
9. CO3 ion has a trigonal planar shape because the O's are at the maximum position possibel due to repulsion of bonds.
10. NH3 has a tetrahedral shape because of the lone pair of N.
11. NH4+ has a tetrahedral shape based on VSEPR theory.
12. BRF3 has a trigonal bipyramidal shape because it forms bonds with F at 82.1 degrees Celsius angles.
13. TiCI4 has a tetrahedral shape because it does not have a lone pair.
14. PCI6 has an octahedral shape because P forms 6 bonds with CI6.
15. H2Se has a bent shape has a bent shape because Se has 2 lone pairs.