Discribe the theory associated with the radius of an atom as it gains an electron

Discribe the theory associated with the radius of an atom as it loses an electron

Which one can gain electrons?

Electron gain enthalphy is the amount of energy involved when an isolated gaseous atom accepts an electron to form a monovalent anion the value of the electron gain enthalpy of halogens are given below: F : -328 KJ mol^(-1) Cl - 349 KJ mol^(-1) Br : -325 KJ mol^(-1) I : -295 KJ mol^(-1)Chlorine has more negative electron gain enthalpy than fluorine. why ?

Electron gain enthalphy is the amount of energy involved when an isolated gaseous atom accepts an electron to form a monovalent anion the value of the electron gain enthalpy of halogens are given below: F : -328 KJ mol^(-1) Cl - 349 KJ mol^(-1) Br : -325 KJ mol^(-1) I : -295 KJ mol^(-1) Why the negative electron gain enthalpy decreases from chlorine iodine?

i. The energy associated with the first-orbit in the hydrogen atom is -2.18 xx 10^(-18)J atom^(-1) . What is the energy associated with the fifth orbit?

Bohr combined classical and early quantum concept and gave his theory in the form of three postulates. The radius of innermost electron orbit of hydro gen atom is 5.3 * 10^-11m. What are the radii of n = 2 and n = 3 orbits?

Which atom loses electron? Which atom gain electron?