Question

which of the following is the correct bohr model for a neutral carbon atom? choose 1 answer:

Explanation:

To determine the correct Bohr model for a neutral carbon atom, we use the following facts:

1. Atomic Number and Electron Configuration: Carbon has an atomic number of 6, meaning a neutral carbon atom has 6 protons (in the nucleus) and 6 electrons.
2. Electron Shells (Energy Levels):

• The first electron shell (n = 1) can hold a maximum of 2 electrons.
• The second electron shell (n = 2) can hold a maximum of 8 electrons, but for carbon, after filling the first shell with 2 electrons, the remaining \( 6 - 2 = 4 \) electrons go into the second shell.

1. Analyzing the Options:

• Option A: The first shell has 3 electrons (incorrect, as the first shell should hold 2), and the second shell has 3 electrons (total \( 3 + 3 = 6 \), but the first shell is overfilled).
• Option B: The first shell has 2 electrons (correct), and the second shell has 4 electrons (\( 2 + 4 = 6 \), which matches the number of electrons in a neutral carbon atom).
• Option C: The first shell has 2 electrons, but the second shell has 3 electrons (total \( 2 + 3 = 5 \), which is incorrect for carbon).

Answer:

B