Use bond energies to calculate the heat of a reaction: C-N 305 kJ/mol
C-O 358 kJ/mol
C=O 745 kJ/mol
C=O(in CO2) 799 kJ/mol
O-H 467 kJ/mol
N-H 391 kJ/mol
Anyone can help please?

b.

the accuracy of the data.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.