Science 9 Electron Configuration

What is the atomic structure of an atom?

• The atomic structure of an atom consists of a nucleus, which contains electrons and neutrons, surrounded by protons in energy levels or shells.

• The atomic structure of an atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons in energy levels or shells.

• The atomic structure of an atom consists of a nucleus, which contains electrons and protons, surrounded by neutrons in energy levels or shells.

• The atomic structure of an atom consists of a nucleus, which contains electrons and protons, surrounded by neutrons in orbitals or subshells.

What are the three main subatomic particles and their charges?

• Protons, electrons, and quarks

• Protons, neutrons, and photons

• Protons, neutrons, and electrons

• Protons, electrons, and positrons

What is the atomic number of an element?

• The atomic number of an element is the number of electrons in the nucleus of an atom.

• The atomic number of an element is the number of neutrons in the nucleus of an atom.

• The atomic number of an element is the number of protons and neutrons in the nucleus of an atom.

• The atomic number of an element is the number of protons in the nucleus of an atom.

What is the mass number of an element?

• Total number of electrons in the nucleus

• Total number of protons in the nucleus

• Total number of neutrons in the nucleus

• Total number of protons and neutrons in the nucleus

What is the difference between atomic number and mass number?

• The atomic number is the number of neutrons in an atom, while the mass number is the total number of protons and electrons.

• The atomic number is the number of protons in an atom, while the mass number is the total number of protons and neutrons.

• The atomic number is the total number of protons and neutrons in an atom, while the mass number is the number of protons.

• The atomic number is the number of electrons in an atom, while the mass number is the total number of protons and neutrons.

What is an electron configuration?

• The process of converting electrons into protons

• A measurement of the size of an electron

• A representation of how electrons are distributed in an atom or molecule.

• The movement of electrons between atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons can each energy level hold?

• 2n

• n

• n^2

• 2n^2

What is the Aufbau principle?

• The Aufbau principle is a principle in biology that states that living organisms are composed of cells.

• The Aufbau principle is a principle in chemistry that states that atoms tend to gain, lose, or share electrons in order to achieve a full set of valence electrons.

• The Aufbau principle is a principle in quantum mechanics that states that electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels.

• The Aufbau principle is a principle in physics that states that energy is conserved in a closed system.

What is Hund's rule?

• Hund's rule states that electrons occupy orbitals of the same energy level one at a time before pairing up.

• Hund's rule states that electrons occupy orbitals of the same energy level all at once.

• Hund's rule states that electrons occupy orbitals of different energy levels one at a time before pairing up.

• Hund's rule states that electrons do not occupy orbitals and instead exist in a free state.

What is the Pauli exclusion principle?

• The Pauli exclusion principle states that identical fermions can occupy the same quantum state simultaneously.

• The Pauli exclusion principle states that no two identical fermions can occupy the same quantum state simultaneously.

• The Pauli exclusion principle only applies to bosons, not fermions.

• The Pauli exclusion principle states that identical particles can occupy the same quantum state simultaneously.