Overview: Bohr Atomic Model

1. What element is represented in this Bohr Model?

• Carbon

• Hydrogen

• Aluminum

• Lithium

Tags

NGSS.MS-PS1-1

In the Bohr model, how do electrons travel?

• Electrons move in and out of the nucleus

• Electrons do not move

• Electrons move in circular orbits around the nucleus

• Electrons move in a straight line

Which of the following is the first postulate of Bohr's atomic model?

• Electron moves in circular orbits around the nucleus

• The energy of an electron in a hydrogen atom is quantised

• If energy is supplied, electron absorbs the energy and is promoted from a lower energy level to a higher energy level

• At excited state, the electron is unstable. It will fall back to lower energy level and releases a specific amount of energy (photon) in the form of light

Which of the following is the second postulate of Bohr's atomic model?

• Electron moves in circular orbits around the nucleus

• The energy of an electron in a hydrogen atom is quantised

• If energy is supplied, electron absorbs the energy and is promoted from a lower energy level to a higher energy level

• At excited state, the electron is unstable. It will fall back to lower energy level and releases a specific amount of energy (photon) in the form of light

Which of the following is the third postulate of Bohr's atomic model?

• Electron moves in circular orbits around the nucleus

• The energy of an electron in a hydrogen atom is quantised

• If energy is supplied, electron absorbs the energy and is promoted from a lower energy level to a higher energy level

• At excited state, the electron is unstable. It will fall back to lower energy level and releases a specific amount of energy (photon) in the form of light

Which of the following is the fourth postulate of Bohr's atomic model?

• Electron moves in circular orbits around the nucleus

• The energy of an electron in a hydrogen atom is quantised

• If energy is supplied, electron absorbs the energy and is promoted from a lower energy level to a higher energy level

• At excited state, the electron is unstable. It will fall back to lower energy level and releases a specific amount of energy (photon) in the form of light

For an electron to change from ground state to an excited stated it must...

• Absorb energy
• Release energy

What is the light that you can see called?

• observatory light

• ultraviolet light

• visible light

• infrared light

Tags

NGSS.MS-PS4-2

According to the Bohr Model, electrons are only found in specific orbits around the nucleus called __________________________

• Energy Levels
• Electron Lanes
• Electron Places
• Atomic Mass

Bohr discovered that electrons are located in

• the nucleus

• inside protons

• electron cloud

• circular orbits around the nucleus