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)

Blank 1 - 2

Blank 2 - 4

Blank 3 - 3

Explanation:

The unbalanced chemical equation given in the question is as follows:

Au2O3 → Au + O2

To balance a chemical equation, the number of atoms of each element on both sides of the equation (reactants and product) must be the same. Based on this explanation, the balanced chemical equation is as follows:

2Au2O3 → 4Au + 3O2

- 4 atoms of gold (Au) on both sides

- 6 atoms of oxygen on both sides

Hence, based on the question, blank 1, 2 and 3 are 2, 4 and 3 respectively.