How will the average kinetic energy of the molecules in a sample of gas change if the temperature is decreased but the volume of the gas is increased?

The kinetic energy decreases

Explanation:

Firstly, it must be known that temperature is a measure of the average kinetic energy of the molecules. In a situation where there is an increase or decrease of temperature, it is expected that there would be an increase or also a corresponding decrease in the amount of kinetic energy.

In the question above , it was stated that the temperature had been decreased. In this case, it also means the average kinetic energy of the molecules have been decreased too. Increasing the volume is like giving them more space to travel. But this opportunity is left not utilized

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.