Final answer:
The correct answer is option E) A and D answers, showing elements K, Ca, Sc, Ti, and Fr, Cs, Rb, K in order of increasing ionization energy, as they follow the periodic trends of increasing across periods and up groups respectively.
Step-by-step explanation:
The student's question revolves around identifying the correct order of elements in terms of their ionization energy. Ionization energy tends to increase across a period (from left to right) and decrease down a group (from bottom to top) in the periodic table. Therefore, the correct orders for increasing ionization energy are for the groups that follow this trend.
- K, Ca, Sc, Ti
- Fr, Cs, Rb, K
As we can observe, both of these sequences follow the trend. The first sequence is across a period from left to right, and the second sequence is up a group from bottom to top. Thus, the correct answer showing elements in the order of increasing ionization energy would be option E) A and D answers.
Explanation of Selected Options:
Option A) - Starting with potassium (K) and moving to titanium (Ti), it follows the periodic trend across as ionization energy increases from left to right in a period.
Option D) - Starting with francium (Fr) and moving to potassium (K), it follows the periodic trend up a group as ionization energy increases from the bottom to the top.
Therefore, the choices that correctly reflect the trend of increasing ionization energy are those that adhere to periodic trends, which are options A and D.