Exploring the Bohr Model and Atomic Structure

Mr. Anderson explains the development of atomic models, focusing on Bohr's model. He discusses Rutherford's discovery of the nucleus and Bohr's solution to the problem of electron behavior. Bohr's model introduced quantized energy levels, explaining atomic spectra and the periodic table's structure. The video highlights the limitations of the planetary model and how Bohr's model better describes electron transitions and spectra, particularly for hydrogen.

What did Rutherford's gold foil experiment help scientists discover?

• The proton

• The electron cloud

• The small, positive nucleus

• The neutron

According to Niels Bohr, why couldn't electrons spiral into the nucleus?

• They are repelled by the nucleus

• They are not charged particles

• They are in fixed orbits

• They lose energy too slowly

What happens when an electron absorbs energy from a photon?

• It loses energy

• It moves to the nucleus

• It jumps to a higher energy level

• It emits a photon

In a neutral atom, what is the relationship between protons and electrons?

• Protons and neutrons are equal

• Protons and electrons are equal

• Electrons are more than protons

• Protons are more than electrons

What does the atomic number of an element represent?

• Atomic mass

• Number of electrons

• Number of protons

• Number of neutrons

Why are elements like copper, silver, and gold placed in the same column on the periodic table?

• They have similar outer level electrons

• They have similar atomic masses

• They have the same number of protons

• They are all metals

What is meant by the term 'quantized' in the context of electron orbits?

• Electrons are stationary

• Electrons move randomly

• Electrons exist in specific, fixed energy levels

• Electrons can be found anywhere around the nucleus

How does an electron move to a higher energy level?

• By moving closer to the nucleus

• By losing energy

• By gaining energy

• By emitting a photon

What did the Bohr model help to explain about atomic spectra?

• The continuous spectrum of light

• The discrete lines in the spectrum

• The color of light emitted

• The speed of light

Which series in the hydrogen spectrum is visible to the human eye?

• Rydberg series

• Balmer series

• Paschen series

• Lyman series