Select the best answer for the question. 5. Bond energies can be used to estimate the energy of a reaction. Why is
this only an estimate?
A. It's difficult to measure such a small amount of energy.
B. It's difficult to isolate an individual bond.
C. The same bond in a different molecule has a different energy. For example,
O-H in water versus ethanol has different energies.
OD. The bonds in all molecules are the same, but not all molecules have bonds
that are easily measured.
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T
Devil Mansors

A

Explanation:

because its A

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.