Electrons and Atomic Structure

Front

What is the Quantum Mechanics model of the atom?

Back

The Quantum Mechanics model describes the atom as a complex structure where electrons exist in probabilistic orbitals rather than fixed paths, emphasizing wave-particle duality.

Front

Who proposed that 'the atom is mostly empty space'?

Back

Ernest Rutherford proposed that 'the atom is mostly empty space' based on his gold foil experiment, which showed that most alpha particles passed through the foil without deflection.

Front

What does it mean when we say an electron 'gives back' energy?

Back

It means that the energy an electron emits when transitioning to a lower energy level is equal to the energy it originally absorbed when moving to a higher energy level.

Front

In the Bohr model, what happens to an electron's energy level as it moves further from the nucleus?

Back

In the Bohr model, as an electron moves further from the nucleus, its energy level increases.

Front

In the Bohr model, what happens to an electron's energy level as it gets closer to the nucleus?

Back

In the Bohr model, as an electron gets closer to the nucleus, its energy level decreases.

Front

What is the significance of the electron's energy levels in an atom?

Back

Electron energy levels determine the chemical properties of an atom, including its ability to bond with other atoms.

Front

Define the term 'orbital' in the context of atomic structure.

Back

An orbital is a region in an atom where there is a high probability of finding an electron.

Front

What is the relationship between energy and wavelength for electrons?

Back

The energy of an electron is inversely proportional to its wavelength; higher energy corresponds to shorter wavelengths.

Front

What did Niels Bohr contribute to atomic theory?

Back

Niels Bohr developed the Bohr model of the atom, which introduced quantized energy levels for electrons.

Front

What is the role of the nucleus in an atom?

Back

The nucleus contains protons and neutrons and is responsible for the atom's mass and positive charge.