Which of the following correctly describes the Bohr model for an oxygen atom?

• A. An oxygen atom has 8 electrons arranged in two energy levels: 2 electrons in the first shell and 6 electrons in the second shell.
• B. An oxygen atom has 4 electrons in each of two energy levels.
• C. An oxygen atom has 8 electrons all located in a single energy level.
• D. An oxygen atom has 6 electrons in the first shell and 2 electrons in the second shell.

Answer: (A)

Verified step by step guidance

1. Recall that the Bohr model describes electrons orbiting the nucleus in discrete energy levels or shells, with each shell having a maximum capacity of electrons.
2. Determine the total number of electrons in a neutral oxygen atom, which is equal to its atomic number, 8.
3. Understand the maximum number of electrons that can fit in the first energy level (shell 1) is 2, and the second energy level (shell 2) can hold up to 8 electrons.
4. Distribute the 8 electrons of oxygen starting with the first shell: place 2 electrons in the first shell, then place the remaining 6 electrons in the second shell.
5. Compare this electron arrangement to the given options to identify the correct description of the Bohr model for an oxygen atom.