Bohr model

What is the atomic number?

• The number of neutrons in an atom

• The number of protons in the nucleus of an atom

• The total number of electrons in an atom

• The mass of an atom in atomic mass units

What is the significance of the energy levels in the Bohr model?

• Energy levels determine the possible energies that electrons can have and their distance from the nucleus.

• Energy levels are irrelevant to electron behavior in atoms.

• Energy levels only apply to hydrogen atoms and not to other elements.

• Energy levels indicate the mass of the nucleus in an atom.

What is the electron configuration of Neon?

• 1s² 2s² 2p⁶

• 1s² 2s² 2p⁵

• 1s² 2s² 2p⁴

• 1s² 2s² 2p⁷

What is the name of the element with atomic number 2?

• Hydrogen

• Helium

• Lithium

• Beryllium

What is the name of the element with atomic number 18?

• Oxygen

• Nitrogen

• Argon

• Krypton

What is the Bohr model?

• A theory of atomic structure depicting electrons orbiting the nucleus in fixed paths or energy levels.

• A model that describes the behavior of light as both a wave and a particle.

• A theory that states all matter is made up of tiny indivisible particles called atoms.

• A concept that explains the chemical bonding between atoms in a molecule.

How many valence electrons does Carbon have?

• 2

• 4

• 6

• 8

What is the relationship between atomic number and element identity?

• The atomic number determines the mass of an element.

• The atomic number uniquely identifies an element; no two elements can have the same atomic number.

• The atomic number indicates the number of neutrons in an atom.

• The atomic number is the total number of protons and electrons in an atom.

What is a valence electron?

• Electrons that are in the innermost shell of an atom.

• Electrons that are involved in nuclear reactions.

• Electrons in the outermost shell of an atom that are involved in chemical bonding.

• Electrons that are always positively charged.

What is the name of the element with atomic number 10?

• Oxygen

• Neon

• Nitrogen

• Argon