The trend of ionization energy in the periodic table is decreasing from right to left and from top to bottom. In this case, we are given with elements <span>K, Ca, Ge, Se, Br, Kr and see the periodic table to check the trend. The answer from highest to lowest Kr, Br, Se, Ge, Ca, and K</span>
Should be 33. but I habe no clue
Answer: it’s b)
Explanation: that’s the only difference that is listed
The geosphere is about 99.94% of Earth's mass, so C is the answer.