A stable atom that has a large nucleus most likely contains:
1. **Equal numbers of protons and neutrons.**
In stable atoms, the number of protons and neutrons is typically balanced to maintain the atom's stability. This balance helps in preventing the nucleus from being too positively or negatively charged, which could lead to instability.
2. **More neutrons than protons.**
Some larger atoms, especially those with a higher atomic number, require more neutrons than protons to counteract the repulsive forces between positively charged protons in the nucleus. This extra number of neutrons contributes to the stability of the atom.
In summary, a stable atom with a large nucleus can have equal numbers of protons and neutrons or more neutrons than protons to maintain stability and prevent the nucleus from becoming unstable due to excessive positive charge from the protons.
