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Chemistry 4/5 Review
Conversions; Elements
| Question | Answer | |
|---|---|---|
| 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
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