Bohr Model

which type of subatomic particle is on the outer most orbital in the atom

• valence electron

• nucleus

• proton

• neutrons

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

What is the spectrum region for Balmer series?

• Visible

• Ultraviolet

• Infrared

• X-rays

Which line spectrum series in ultraviolet region?

• Lyman

• Balmer

• Paschen

• Brackett

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

What is the name of this element?

• Helium
• Hydrogen
• Argon
• Silver

How many electrons does this element have?

• 11

• 23

• 12

• 1

The characteristic color bands that a hot, dilute gas emits when viewed with a spectroscope are called...

• emission spectra

• absorption spectra

• continuous spectra

• black body radiation

The shortest wavelength in visible light is______.

• violet
• red
• blue
• yellow

_______ carry the greatest amount of energy. 

• x-rays
• gamma rays
• infrared rays
• visible light