Question

li has an ionization energy of 520 kj/mol. f has an ionization energy of 1680 kj/mol. which of the following is a possible explanation for the trend?
ionization energy increases down the periodic table and decreases across the periodic table
each electron on an atom has a set amount of energy. since fluorine has more electrons, then it will have more ionization energy than lithium.
fluorine has strong attractive forces between the nucleus and the electrons. it takes more energy to remove an electron from fluorine than lithium.
lithium has a smaller atomic radius than fluorine. it takes less energy for an electron to be added to the outer energy level on lithium than the outer energy level on fluorine.

Explanation:

• Ionization energy is the energy required to remove an electron from an atom.
• Fluorine has a higher nuclear charge (more protons) than lithium.
• The increased nuclear charge in fluorine leads to stronger attractive forces between the nucleus and electrons.
• As a result, it takes more energy to remove an electron from fluorine (higher ionization energy) compared to lithium.

Answer:

Fluorine has strong attractive forces between the nucleus and the electrons. It takes more energy to remove an electron from fluorine than lithium.