The next three questions will relate to the binding energy of Technetium-99, which has a mass of 98.906255 amu. Given the mass of a hydrogen atom is 1.007825 amu and a neutron is 1.008665 amu. (Remember, 1 amu- 1 g/mol) Fill in the blank: -274 atom The mass defect is ×

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.