To determine the largest neutral atom you can build from the options provided, we need to look at the atomic numbers of each element. The atomic number represents the number of protons (and also electrons in a neutral atom) in an atom. The larger the atomic number, the larger the atom.
Here are the atomic numbers for the elements mentioned:
- A. Sodium (Na) - Atomic number 11
- B. Fluorine (F) - Atomic number 9
- C. Magnesium (Mg) - Atomic number 12
- D. Neon (Ne) - Atomic number 10
Based on the atomic numbers, magnesium (Mg) has the largest atomic number of 12. Therefore, the largest neutral atom you can build from the options given is:
C. magnesium (Mg)