Exam 2 Practice

Front

What does the Aufbau Principle state?

Back

Electrons occupy orbitals of lowest energy first.

Front

What characterizes noble gases?

Back

Full valence shell of electrons.

Front

What do isotopes of the same element have in common?

Back

They have the same number of protons.

Front

Which element has the largest atomic radius among Ca, Be, Ba, and Sr?

Back

Ba (Barium).

Front

What is the electron configuration for Silicon (Si)?

Back

1s² 2s² 2p⁶ 3s² 3p².

Front

What is Hund's Rule?

Back

Electrons will fill degenerate orbitals singly before pairing up.

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 ionization energy?

Back

The energy required to remove an electron from an atom.

Front

What is the trend of atomic radius in the periodic table?

Back

Atomic radius increases down a group and decreases across a period.

Front

What is the significance of a full valence shell?

Back

Atoms with a full valence shell are generally more stable and less reactive.