Which element has highest Ea ?

Question

Which element has highest Ea ?

Answer 1

If you mean Electron Affinity then Fluorine.

Answer 2

electron affinity?it is fluorine.just remember this, down the group in the periodic table,EA is decreasing and across the periodic table it is increasing. it is bound only until the group of halogens, group 18 or the noble gases are chemically inert and not included in relative strengths of EA of the elements.

Answer 3

Electron affinity is the energy released when we add an electron to the outermost orbit of the atom.

and Halogens are the higher in electron affinity thus chlorine have the higher electron affinity then rest of the halogen.

The irregularity in the electron affinity trend between Cl and F is due to the small size of the F atom. Although F definitely has a higher attraction for an electron than Cl (as evidenced by its high electro negativity value), the small size of the F atom means that adding an electron creates significant repulsion. Since electron affinity is an energy measurement, the total energy associated with electron affinity winds up being the energy that is released by the electron binding to the nucleus, minus the energy involved in overcoming the electrical repulsion in the outer shell.

This makes the fluoride anion so formed unstable due to a very high charge/mass ratio. Also, fluorine has no d electrons which limits its atomic size. As a result, fluorine has an electron affinity less than that of chlorine.

Answer 4

Chlorine:Cl