Which term means the central part of an atom?

Study for the MTA Electrical Test. Use our flashcards and multiple choice questions to prepare, each question includes hints and explanations. Achieve success on your exam!

Multiple Choice

Which term means the central part of an atom?

Explanation:
The central part of an atom is called the nucleus. It’s the dense core that contains protons and neutrons, holding nearly all of the atom’s mass in a tiny space. The nucleus carries a positive charge due to the protons, while electrons occupy the surrounding space, forming the atom’s electron cloud. In other words, “nucleus” names the central region itself, whereas the other terms refer to individual particles—electrons orbit the nucleus, and protons and neutrons (the constituents of the nucleus) sit inside it. Rutherford’s experiments showed that atoms have a small, dense center, which is why the nucleus is the correct term for the central part.

The central part of an atom is called the nucleus. It’s the dense core that contains protons and neutrons, holding nearly all of the atom’s mass in a tiny space. The nucleus carries a positive charge due to the protons, while electrons occupy the surrounding space, forming the atom’s electron cloud. In other words, “nucleus” names the central region itself, whereas the other terms refer to individual particles—electrons orbit the nucleus, and protons and neutrons (the constituents of the nucleus) sit inside it. Rutherford’s experiments showed that atoms have a small, dense center, which is why the nucleus is the correct term for the central part.

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