1. When the hydrogen electron falls from an unknown higher energy level n=x to a lower energy level n=y, the emitted photon strikes a copper plate, and ejecting an electron with zero velocity. Find the unknown higher and lower energy levels. (Hint: before you start solving for x and y, you need to search for the binding energy for Copper metal). (25 points)

When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. When an electron moves from a higher to a lower energy level, energy is released (often as light). ... Transitions to level n = 1 are too high energy to see (UV)

i believe the answer is c. "baking" is the gerund, while "baking blueberry muffins" would be the gerund phrase. hope this ! : )

i think the answer is terrae but not 100 percent sure. ▓▬▬ §