Honors Chem Unit 7 2025

What is the relationship between the speed of electromagnetic radiation and its wavelength?

The wavelength of electromagnetic radiation is inversely proportional to its frequency.

What behavior does electromagnetic radiation exhibit as it travels through space?

Electromagnetic radiation exhibits wavelike behavior.

If electromagnetic radiation A has a lower frequency than electromagnetic radiation B, how does their wavelength compare?

The wavelength of A is longer compared to B.

What is the distance between two successive peaks on a wave called?

The distance is called the wavelength.

What happens when an electron falls from the excited state to the ground state?

It emits a photon (light wave) with a specific wavelength.

How is the energy of a photon related to its frequency?

The energy of a photon is directly proportional to its frequency.

What causes a bright-line spectrum of an atom?

It is caused by the energy released when electrons fall to a lower energy level.

What was the Bohr model of the atom attempting to explain?

It was an attempt to explain hydrogen's line-emission spectrum.

What must happen for an electron in an atom to change from the ground state to an excited state?

A photon must be absorbed.

What state is an atom in when its electrons have the lowest possible energies?

The atom is in the ground state.

For which atom does Bohr's model work best?

Bohr's model works best in explaining only the spectrum of hydrogen.

According to Bohr's theory, what happens to an excited atom?

An excited atom would absorb photons and radiate energy.

How does the single electron of a hydrogen atom move according to the Bohr model?

It circles the nucleus in specific allowed orbits.

What type of radiation is associated with the drop of an electron from a high energy level to the ground state in a hydrogen atom?

This drop is most closely associated with high-frequency radiation.

How many electrons are needed to completely fill the fourth energy level?

A total of 32 electrons are needed.

What is the region outside the nucleus where an electron can most probably be found called?

This region is called an orbital.

What shape does a spherical electron cloud surrounding an atomic nucleus represent?

It represents an s orbital.

What is the shape of p orbitals?

P orbitals are shaped like dumbbells.

What principle specifies the sequence in which energy sublevels are filled?

The Aufbau principle specifies this sequence.

What is the major difference between a 1s orbital and a 2s orbital?

The 2s orbital has a higher energy level than the 1s orbital.

How many possible orbital shapes are there for the third energy level?

There are 3 possible orbital shapes.

How many orbitals are in the d sublevel?

There are 5 orbitals in the d sublevel.

How many electrons can occupy the s orbitals at each energy level?

S orbitals can hold two electrons, if they have opposite spins.