Final answer:
The statement about ionization energy is false; ionization energy decreases as we go down a group, and increases as we move from left to right across a period in the periodic table. The correct answer is option: B. False.
Step-by-step explanation:
The statement that ionization energy increases as we move down a group of the periodic table is incorrect. Instead, ionization energy decreases as we move down a group because the valence electrons are further from the nucleus and are shielded by the inner layers of electrons, making them easier to remove.
On the other hand, as we move from left to right across a period, ionization energy increases. This is because the atomic number (and thus, nuclear charge) increases, causing the valence electrons to be held more tightly by the nucleus. Therefore, the correct answer to the student's question is B. False.