protons and electrons grouped together in a random pattern protons and electrons grouped together in an alternating pattern a core of protons and neutrons surrounded by electrons a core of electrons and neutrons surrounded by protons
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following best describes an atom?
Possibilities:
- protons and electrons grouped together in a random pattern
- protons and electrons grouped together in an alternating pattern
- a core of protons and neutrons surrounded by electrons
- a core of electrons and neutrons surrounded by protons

a core of protons and neutrons surrounded by electrons