Electronic Structure of Atoms Quiz

What is the significance of the wave function (ψ) in Schrödinger's equation?

• It represents the exact location of an electron at any given time

• It describes the probability distribution of an electron in an atom

• It determines the number of protons in an element

• It is used to measure atomic mass

Which set of quantum numbers (n, l, ml) is invalid?

• (3, 2, -2)

• (4, 3, 4)

• (2, 1, 0)

• (1, 0, 0)

What does the Pauli Exclusion Principle state about electron configuration?

• Electrons fill orbitals in order of increasing energy

• No two electrons in an atom can have the same set of four quantum numbers

• Electrons occupy empty orbitals before pairing up

• Electrons always exist in fixed circular orbits around the nucleus

How does the Aufbau principle determine the electron configuration of an atom?

• Electrons occupy the highest energy level first

• Electrons fill orbitals with the same spin before pairing

• Electrons fill orbitals from lowest to highest energy levels

• The total number of protons and neutrons determines the configuration

Which of the following quantum numbers determines the shape of an electron's orbital?

• Principal quantum number (n)

• Magnetic quantum number (m)

• Azimuthal quantum number (l)

• Spin quantum number (s)

Which of the following is the correct electron configuration for a neutral sulfur (S) atom, which has an atomic number of 16?

• 1s² 2s² 2p⁶ 3s² 3p⁴

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p²

• 1s² 2s² 2p⁶ 3s² 3p³

What is the difference between an atomic orbital and an energy level?

• There is no difference

• Energy levels are smaller than orbitals

• Energy levels contain only one orbital

• An atomic orbital is a region where electrons are likely to be found, while an energy level is a fixed distance from the nucleus

What does the principal quantum number (n) represent?

• The shape of the orbital

• The orientation of the orbital

• The size and energy level of the orbital

• The spin of an electron

Why do elements in the same group of the periodic table have similar chemical properties?

• They have the same number of energy levels

• They have the same number of valence electrons

• They have the same atomic radius

• They have the same number of neutrons

What does the principal quantum number (n) represent?

• The shape of the orbital

• The orientation of the orbital

• The size and energy level of the orbital

• The spin of an electron