Question

Of the five elements Sn, Si, Sb, O, Te, which has the most endothermic reaction? (E represents an atom.) What name is given to the energy for the reaction?

E(g)⟶E+(g)+e−
a) Sb; Ionization energy
b) Sn; Ionization energy
c) O; Electron affinity
d) Te; Electron affinity

Answer 1

The most endothermic reaction for ionization among Sn, Si, Sb, O, and Te is for the element oxygen (O), and the energy associated with this process is called ionization energy.

Step-by-step explanation:

Among the elements Sn, Si, Sb, O, and Te, the energy needed to remove an electron from a gaseous atom is known as the ionization energy.

The reaction given, E(g) → E+(g) + e-, represents the process of ionization. This reaction is always endothermic, meaning energy is absorbed from the surroundings during the process. The element oxygen (O) is known to have a high ionization energy because it is a nonmetal with a high electronegativity, indicating that it strongly attracts electrons. Therefore, oxygen would have the most endothermic ionization of the given elements.