What is the primary composition of the nucleus?

• Neutrons and electrons

• Protons and electrons

• Protons and neutrons

• Neutrons and positrons

What is the misconception about the nucleus being a solid, compact structure?

• It is a static entity

• It occupies a large volume

• It contains both protons and electrons

• It is a dynamic and intricate arrangement

What is the atomic mass of an element?

• Number of neutrons

• Sum of protons and neutrons

• Sum of protons and electrons

• Number of protons

Why is atomic mass not always a whole number?

• Due to the presence of isotopes

• Due to the number of electrons

• Due to the number of protons

• Due to the atomic number

What are isotopes of the same element?

• Same number of protons and neutrons

• Different elements

• Different chemical properties

• Different number of protons

What is the nucleus of an atom composed of?

• Neutrons and positrons

• Protons and electrons

• Neutrons and electrons

• Protons and neutrons

What is the average mass of all the isotopes of an element?

• Number of neutrons

• Sum of protons and neutrons

• Number of protons

• Sum of protons and electrons

What is the Bohr model useful for explaining?

• Electron configuration

• Atomic mass

• Atomic spectra of hydrogen-like atoms

• Isotopes

What is the significance of the quantum numbers n, l, mℓ, and ms?

• Predicting chemical reactivity

• Calculating atomic radius

• Determining atomic mass

• Describing electron states

What do the quantum numbers n, l, mℓ, and ms define?

• Atomic mass

• Chemical bonding

• Electron properties

• Isotopes