Atomic Charges in Basic Structure

Steps:

• Recall that the nucleus contains protons, which carry a positive charge.
• Note that electrons orbit the nucleus and carry a negative charge.
• Identify the question asks for nucleus charge first, then electron charge.
• Match to options: positive for nucleus, negative for electron.

Why D is correct:

• By atomic theory, protons in the nucleus give it a positive charge, while electrons have a negative charge as fundamental particles.

Why the others are wrong:

• A: Nucleus is positive, not negative.
• B: Both are not negative; nucleus is positive.
• C: Nucleus is charged positive, not neutral.

Final answer: D