Math Problem Statement

Our understanding of the H atom will help us learn about atoms with more electrons. The n =1 electron energy level of a H atom has an energy of −2.18 × 10–18 J. (a) What is the energy of the n = 5 level?

Solution

To find the energy of the electron in the n=5n = 5 level for a hydrogen atom, we can use the energy level formula for hydrogen atoms:

En=2.18×1018Jn2E_n = \frac{-2.18 \times 10^{-18} \, \text{J}}{n^2}

Where:

  • EnE_n is the energy of the electron in the nn-th energy level,
  • nn is the principal quantum number (in this case n=5n = 5),
  • 2.18×1018J-2.18 \times 10^{-18} \, \text{J} is the energy of the electron in the n=1n = 1 level.

Now, we can plug n=5n = 5 into the formula:

E5=2.18×1018J52=2.18×1018J25E_5 = \frac{-2.18 \times 10^{-18} \, \text{J}}{5^2} = \frac{-2.18 \times 10^{-18} \, \text{J}}{25}

Let's calculate the energy for n=5n = 5.The energy of the electron in the n=5n = 5 energy level of a hydrogen atom is approximately 8.72×1020J-8.72 \times 10^{-20} \, \text{J}.

Do you have any questions or need further clarification?

Here are five related questions to consider:

  1. How does the energy of an electron change as the value of nn increases?
  2. What is the significance of negative energy values for electron levels in hydrogen atoms?
  3. How would the energy change if we considered an atom with more than one electron?
  4. Can you calculate the wavelength of light required to excite an electron from n=5n = 5 to n=1n = 1?
  5. How do energy levels differ between hydrogen and heavier atoms?

Tip: As nn increases, the energy levels get closer together, which means that the energy difference between consecutive levels decreases.

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Math Problem Analysis

Mathematical Concepts

Quantum Mechanics
Energy Levels of Hydrogen Atom
Principal Quantum Number

Formulas

E_n = (-2.18 × 10^{-18} J) / n^2

Theorems

Bohr Model of the Atom
Energy Level Quantization

Suitable Grade Level

Grades 10-12