Front

What is the noble gas configuration for a neutral atom of strontium?

Back

[Kr]5s²

Front

What does Hund's rule state?

Back

Single electrons with the same spin must occupy each energy orbital before additional electrons with opposite spins can occupy the same orbitals.

Front

In the equation E=hv, what does E represent?

Back

The energy of photons given off by excited electrons.

Front

What type of orbital do the elements colored in yellow have their highest occupied electrons?

Back

s

Front

What is the electron configuration for a neutral oxygen atom?

Back

1s²2s²2p⁴

Front

What is Planck's constant?

Back

A fundamental constant used to describe the sizes of quanta in quantum mechanics.

Front

What is the significance of the quantum model of the atom?

Back

It describes the behavior of electrons in atoms as wave functions rather than fixed orbits.

Front

What is the principle of energy quantization?

Back

Energy levels in an atom are quantized, meaning electrons can only exist in specific energy states.

Front

What is the Pauli Exclusion Principle?

Back

No two electrons in an atom can have the same set of four quantum numbers.

Front

What is the difference between an atomic orbital and an energy level?

Back

An energy level is a fixed distance from the nucleus where electrons can exist, while an atomic orbital describes the probability distribution of an electron in that energy level.