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Chemistry 4/5 Review

Conversions; Elements

QuestionAnswer
1/3 rules that govern the filling of atomic orbitals by electrons Aufbau Principle - electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels
2/3 Pauli Exclusion Principle - the quantum mechanical principle which states that two or more identical fermions can't occupy the same quantum state within a quantum system simultaneously
3/3 Hund's Rule - electrons degenerate orbitals one at a time with parallel spins
Definitions: Wavelength -lambda- the distance between corresponding points on adjacent waves
Atomic Radius - half of the distance between the nuclei of two atoms of the same element when the atoms are joined
Frequency - v (nu) - the number of waves that pass a given point in a specific time
Aufbau - states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels
Electronegativity the ability of an atom of an element to attract electrons when the atom is in a compound
Electron Configuration - the distribution of electrons of an atom or molecule in atomic or molecular orbitals
Ionization Energy the energy required to remove an electron from an atom
Excitation the addition of a discrete amount of energy (called excitation energy) to a system
Ground State the arrangement of electrons around the nucleus of an atom with lower energy levels
Energy Level one of the stable states of constant energy that may be assumed by a physical system-- used especially of the quantum states of electrons in atoms of nuclei
Atomic Orbital - regions of space around the nucleus of an atom where an electron is likely to be found; allow atoms to make covalent bonds; most commonly filled orbitals are s, p, d, and f; S orbitals have no angular nodes and are spherical
Wave particle duality - the property of particles behaving as waves and the property of waves behaving as particles as well as waves
Which of the following will have the higher electronegativity? Justify your answers. a. Sr/Zr b. Ag/Cd c. Sb/ I d. I/Xe a. Zr is higher because row starting from the left to the right means the electronegativity will increase b. Cd is higher " c. I is higher " d. I is higher "
Are electrons particles or waves? They are both due to waves-particle duality.
Created by: kianaortilla