Unit 5 Test - Electrons in Atoms

According to Bohr’s theory, electrons can be found in:

• orbit around the nucleus at varying distances

• a cloud around the nucleus with higher energy electrons further away

• hanging out on the corner

• orbit the nucleus at constant distances related to their energy level

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According to Bohr's model of the atom:

• electrons excite from a lower energy level to a higher energy level when they absorb a photon of the correct energy

• electrons release photons when they are excited from one energy level to a higher one

• electrons can switch from one energy level to another by trading energy with other electrons

• energy is continuous in an atom

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According to Bohr’s theory, atoms emit specific light spectra because:

• they are trying to get rid of excess heat

• electrons excite from one energy state to a higher one and release that amount of energy as a photon

• each atom has electrons of certain energies that produce specific photons

• electrons relax from one energy state to another and release that amount of energy as a photon

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The biggest problem with the Bohr's model of the atom is that:

• it doesn't work for anything but hydrogen

• nothing, it's perfect

• it doesn't accurately explain any photons emitted by atoms

• it doesn't explain why the electrons orbit in circles

Electrons in energy levels farther from the nucleus have ________ energy than/as electrons in energy levels closer to the nucleus.

• less

• depends on the element

• greater

• the same

What was Louis de Broglie's contribution to solving the problems in the Bohr model?

• discovering that electrons go into the lowest energy state available

• applying probability wave theory to electrons

• defining the four quantum numbers

• treating the electrons as wave particles

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Schrodinger improved on Bohr's work by:

• applying probability wave functions to the electron energy levels and discovering orbitals in the electron cloud

• theorizing that electrons have wave-particle duality just like photons

• determining that it was impossible to know both the position and location of an electron

• showing that each electron in an atom must have a unique set of quantum numbers

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The second quantum number is known as the ____________ number.

• sublevel

• spin

• orbital

• energy level

The magnetic quantum number, or orbital number, tells us:

• the orientation of the orbital

• the shape of the orbital

• the size of the orbital

• the direction of electron spin

There are ___ orbitals in the f sublevel, so the f sublevel can hold ___ electrons.

• 1, 2

• 3, 6

• 5, 10

• 7, 14