Given the following reactions and their enthalpy changes,

cis C4H8(g) +6 O2(g) → 4 CO2(g) + 4 H2O(g) ΔH = 2710 kJ

trans C4H8(g) +6 O2(g) → 4 CO2(g) + 4 H2O(g) ΔH = 2707 kJ

what is the enthalpy change for the reaction

cis C4H8(g) → trans C4H8(g)?

all eukaryotic cell have mitochondria : )

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.