The element with the smallest ionization energy is hydrogen. The ionization energy of hydrogen is only 13.6 eV, which is much smaller than the ionization energies of other elements. This is because the hydrogen atom is very small and has a very low mass. The low mass of the hydrogen atom allows it to be easily ionized by a small amount of energy.
Other related questions:
Q: Which element on the periodic table has lowest ionization energy?
A: The element with the lowest ionization energy is helium.
Q: Which element has the smallest ionization energy quizlet?
A: The element with the smallest ionization energy is hydrogen.
Q: Which of the following has the lowest ionization energy?
A: The element with the lowest ionization energy is lithium.
Q: How do you find the smallest ionization energy?
A: The ionization energy is the minimum amount of energy required to remove an electron from an atom or molecule.