Please choose the correct answer to the question: If the atomic mass number of an atom is 35, which statement is most accurate?

Answer1: The atom is not an isotope. Answer2: The atomic number is less than 17. Answer3: The atom has an odd number of neutrons. Answer4: The number of protons does not equal the number of neutrons.

Answer format: answer1/answer2/answer3/answer4
Answer: answer4