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Na — Na+ + e-

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  • What is the first ionization energy?

  • First ionization energy shows periodically through the table of elements in a repetitive pattern. First ionization energy is the amount of energy required to remove an electron from one mole of gaseous atoms to produce one mole of gaseous ions with a positive charge.

  • How do you find the ionization energy of an atom?

  • Formula to calculate ionization energy. For atoms with more than one electron, we use the following formula. Z is the atomic number. Calculate the ionization energy of Helium. The atomic number of Helium is 2. Therefore, the ionization energy of Helium is 13.6 electron volts.

  • How does the first ionization energy affect the removal of electrons?

  • Furthermore, the electron being removed when the first ionization energy is measured spends less of its time near the nucleus of the atom, and it therefore takes less energy to remove this electron from the atom. Exceptions to the General Pattern of First Ionization Energies

  • Why is the second ionization energy higher than the first?

  • Each succeeding energy is larger than the preceding one. Second ionization energy is higher than the first ionization energy because removing the first electron gives the atom stable electron shell like an alkali metal but removing the second electron involves a new electron shell that is closer and tightly bound to the atomic nucleus [3].

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