Based on the data we looked at in class, which statement is true? Question 3 options:

The reaction of NO2 and N2O4 was reversible.

The reaction of NO2 and N2O4 was not reversible.

Changing the concentration of moles stopped the reaction from reaching equilibrium.

The reaction never reached equilibrium.

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.