What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 u 1014 /s?

binding energy is 99771 J/mol

Exlanation:

given data

threshold frequency = 2.50 ×   Hz

solution

we get here binding energy using threshold frequency of the metal that is express as

   ..................1

here E is the energy of electron per atom  and h is plank constant i.e.  and x is  binding energy

and here N is the Avogadro constant =

so E will  

E =  

so put value in equation 1 we get

= 2.50 ×   ×  

solve it we get

x = 99770.99

so  binding energy is 99771 J/mol

lol

explanation:

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force