Bohr Model of the Hydrogen Atom

Most of the mass of the atom is found ___.

• In the cloud

• In the nucleus

Tags

NGSS.HS-PS1-8

Which subatomic particle is not found in the nucleus of an atom?

• Proton

• Neutron

• Electron

• All of the above are found in the nucleus

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NGSS.HS-PS1-8

How are electrons arranged in an atom?

• In groups of five

• In energy levels

• By color

• By shape

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NGSS.HS-PS1-1

How many electrons can go in the first energy level?

• 2

• 8

• 18

• 32

What is the main postulate of the Bohr model regarding electron orbits?

• Electrons orbit the nucleus in fixed paths called energy levels.

• Electrons move randomly around the nucleus.

• Electrons are embedded in a positive sphere.

• Electrons do not exist in the atom.

According to the Bohr model, what determines the energy of an electron in a hydrogen atom?

• The size of the nucleus.

• The distance of the electron from the nucleus.

• The number of neutrons in the nucleus.

• The shape of the electron's orbit.

In the Bohr model, what happens when an electron jumps from a higher energy level to a lower one?

• The atom becomes ionized.

• A photon is emitted.

• The electron is destroyed.

• The nucleus changes.

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NGSS.HS-PS4-3

Which of the following is a limitation of the Bohr model?

• It cannot explain the spectra of atoms with more than one electron.

• It accurately predicts the behavior of all elements.

• It describes electron orbits as elliptical.

• It accounts for electron spin.

What is the formula for the radius of the nth orbit in the Bohr model of the hydrogen atom?

How does the Bohr model explain the stability of the hydrogen atom?

• Electrons are stationary and do not move.

• Electrons emit radiation continuously.

• Electrons in stable orbits do not radiate energy.

• Electrons are held by gravitational forces.