In a neutral atom, which two types of subatomic particles are present in equal numbers?

• A. Electrons and positrons
• B. Neutrons and electrons
• C. Protons and electrons
• D. Protons and neutrons

Answer: (C)

Verified step by step guidance

1. Recall that a neutral atom has no overall electric charge, meaning the total positive charge must balance the total negative charge.
2. Identify the subatomic particles involved: protons (positively charged), electrons (negatively charged), and neutrons (neutral charge).
3. Understand that neutrons have no charge, so their number does not affect the atom's overall charge balance.
4. Since the atom is neutral, the number of protons (positive charge) must be equal to the number of electrons (negative charge) to cancel each other out.
5. Therefore, the two types of subatomic particles present in equal numbers in a neutral atom are protons and electrons.