Use the References to access important values if needed for this question. A sample of krypton gas at a pressure of 1.02 atm and a temperature of 167°C, occupies a volume of 587 mL. If the gas
is heated at constant pressure until its volume is 849 mL, the temperature of the gas sample will be
°C.

i believe the answer is a.

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.