QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Which statement describes an atomic nucleus?
A. An atomic nucleus is negatively charged.
B. An atomic nucleus has no electrical charge.
C. An atomic nucleus consists of mostly empty space.
D. An atomic nucleus contains most of the atom’s mass.
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Answer
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Step 1I'll solve this step by step with clear reasoning:
Step 2: Understand the Structure of an Atom
- An atom consists of three primary subatomic particles: * Protons (positively charged) * Neutrons (no electrical charge) * Electrons (negatively charged)
Final Answer
An atomic nucleus contains most of the atom's mass. Explanation: The nucleus, composed of protons and neutrons, contains approximately 99.9% of an atom's total mass, making option D the correct statement.
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