If 0.55g of a gas dissolves in 1.0 L of water at 2.0 atm of pressure, how much will dissolve at 4.5 atm of pressure

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.

a chemical change results in a new substance being formed; whereas a physical change will result in a different state of matter

explanation: