Amolecule containing a central atom with sp2 hybridization has a(n) electron geometry. a. bentb. tetrahedralc. lineard. trigonal bipyramidale. trigonal planar

E. trigonal planar

Explanation:

The trigonal planar geometry is made up of 3 equally spaced sp2 hybrid orbitals arranged at angle 120° to each other, The molecule are electron deficient and does not follow octet rule. Therefore, a molecule containing an sp2 hybrid central atom has a trigonal planar geometry e.g boron hydride (BH3)

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.