What does the symbol "e3" represent? a.)the energy required to remove the third valence electron b.)the energy of electrons in the third energy level c.)the energy required to remove an electron in the third energy level d.)the energy required to remove three of the outermost electrons

The energy of the electron in third energy level.

Explanation: The energy of the electrons depend on the value of n, i.e the value of principal quantum number which tells the shell of the electron.

E= energy

Z= atomic number

n= principal quantum number

Thus represents the energy of the electron which is present in n=3.

the answer is option a.