Atomic Structure and Isotopic Diversity

The ______ arranges elements by their increasing number of protons, starting with hydrogen and ending with oganesson.

Elements with atomic numbers greater than 82 are typically ______, with the exception of bismuth.

Theoretical vs. Observed Stable Nuclides

Most Stable Isotopes by Element

Stability of Elements with Atomic Numbers 43, 61, >83

An atom's mass is largely attributed to ______ and ______, which are collectively known as nucleons.

The atomic mass number signifies an atom's mass, while the actual mass is measured in ______.

A carbon-12 atom serves as the reference point for one ______ in atomic mass units.

In chemistry, the mole represents ______ number, which is about 6.022 x 10^23 atoms.

Atomic Radius Definition

Atomic Size Variation Factors

Atomic Scale Visualization

Alpha decay involves the emission of ______ nuclei, while beta decay is the transformation of ______ to ______ or the opposite.

Gamma decay is characterized by the emission of ______-energy ______.

Each radioactive isotope is defined by a specific -, which is the duration needed for half the sample to undergo decay.

The decay of radioactive isotopes follows an ______ decay curve, indicating how the quantity of the isotope decreases over time.

Effect of paired vs unpaired electrons on magnetism

Role of nuclear spins in atom's magnetic properties

In an atom, electrons are organized in distinct ______ or shells.

The ______ state is the name for the lowest energy level in an atom.

Electrons ascend to higher energy levels by ______ energy.

When electrons fall back to lower energy levels, they release energy, often as ______.

______ is the scientific study of atomic spectra to identify substance composition and properties.

Stable electron configuration goal

Ionic vs Covalent bonds