Chemistry Quiz 03

According to the Bohr model of the atom, which particles are allowed to exist in any one of a number of energy levels?

• electrons

• protons

• neutrons

• both protons and neutrons

The line-emission spectrum of an atom is caused by the energies released when electrons

• “jump” from a lower energy level to a higher energy level.

• “jump” from a higher energy level to a lower energy level.

• “jump” from the ground state to an excited state.

• None of the above

A form of energy that exhibits wave behavior as it travels through space is

• microwave radiation.

• ultraviolet radiation.

• infrared radiation.

• All of the above

In the equation c = λν, c represents

• the wavelength.

• the frequency.

• the speed of light.

• Planck’s constant.

In the Bohr model of the atom, in which orbit is an electron in its lowest energy state?

• in the orbit closest to the nucleus

• in the orbit farthest from the nucleus

• in the electron cloud

• midway between two orbits

How many electrons are present in an atom of calcium that has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²?

• 6

• 16

• 20

• 36

The ground-state electron configuration of neon is 1s²2s²2p⁶. In this arrangement, how many of neon’s p orbitals are completely filled?

• 1

• 2

• 3

• 6

Oxygen has an electron configuration of 1s²2s²2p⁴. In this arrangement, how many inner-shell electrons does oxygen have?

• 1

• 2

• 4

• 8

A ground-state atom of which element has one electron in its fourth and outermost main energy level?

• K

• Na

• B

• Ga

Separating unpaired electrons into as many orbitals as possible

• places the electrons farther from the nucleus.

• results in more valence electrons.

• minimizes the repulsion between electrons.

• produces a greater spin quantum number.