Match the subatomic particles (1 to 3) to each of the descriptions below:
1. protons
2. neutrons
3. electrons
b. surround the nucleus

Verified step by step guidance

1. Identify the three subatomic particles: protons, neutrons, and electrons. Protons and neutrons are located in the nucleus, while electrons are found outside the nucleus.
2. Understand the description provided: 'surround the nucleus.' This refers to the region outside the nucleus where subatomic particles are located.
3. Recall that electrons are negatively charged particles that move in regions of space called orbitals around the nucleus.
4. Match the description 'surround the nucleus' to the subatomic particle that fits this behavior, which is the electron.
5. Conclude that the correct match for the description 'surround the nucleus' is the subatomic particle labeled as '3. electrons.'

Key Concepts

Subatomic Particles

Subatomic particles are the fundamental constituents of atoms, which include protons, neutrons, and electrons. Protons carry a positive charge and are found in the nucleus, while neutrons are neutral and also reside in the nucleus. Electrons, on the other hand, are negatively charged and orbit the nucleus in various energy levels.

Atomic Structure

The atomic structure refers to the arrangement of subatomic particles within an atom. The nucleus, composed of protons and neutrons, is at the center, while electrons occupy regions around the nucleus, known as electron shells or orbitals. This structure is crucial for understanding chemical behavior and bonding.

Electron Configuration

Electron configuration describes the distribution of electrons in an atom's electron shells. Electrons fill these shells based on specific rules, such as the Aufbau principle, which states that electrons occupy the lowest energy levels first. This configuration influences an atom's reactivity and the types of bonds it can form.