CH. 1 - Key Concept List

Question 1

Chapter 1 - Key Concept List

Answer 1

1.1 Subatomic Particles**

• protons
• neutrons
• electrons
• nucleus of atom
• fundamental unit of charge
• atomic mass unit (amu)
• atomic number (Z)
• mass number (A)
• isotope
• ^A_ZX
• shells
• valence electrons
• cation/anion

1.2 Atomic Mass vs Atomic Weight**

• atomic mass
• mass number isotopes
• atomic weight
• mole
• Avogadro’s number

1.3 Rutherford, Planck, and Bohr***

• quanta
• energy of quanta (quantization)
• Planck relation (eq)
• speed of light (c)
• Planck’s constant
• angular momentum (eq)
• energy of electron (eq)
• Rydberg unit of energy
• orbit
• ground state
• excited state
• atomic emission spectrum
• atomic emission spectra (eq)
• line spectrum
• Lyman series, Balmer series, and Paschen series
• energy of emitted photon (eq 1.5)
• atomic absorption spectrum

1.4 Quantum Mechanical Model of Atoms***

• quantum mechanical model
• orbitals
• Heisenberg uncertainty principle
• Pauli exclusion principle
• energy state
• principal quantum number (n)
• shell
• maximum number of electrons within a shell (eq)
• energy difference between 2 shells (eq)
• azimuthal (angular momentum) quantum number (l)
• subshell
• azimuthal (angular momentum) quantum number (l) (eq)
• spectroscopic notation
• maximum number of electrons within a subshell (eq)
• magnetic quantum number (m_l)
• m_l equation (eq) (*see key concept on p.19)
• probability density
• spin quantum number (m_s)
• paired spins
• parallel spins
• electron configuration
• Aufbau principle (building-up principle)
• n+l rule
• Hund’s rule
• paramagnetic
• diamagnetic