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Chapter 1 Vocabulary
Structure Determines Properties: Organic Chemistry (Carey)
7
Organic Chemistry
Undergraduate 1
01/17/2012

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Term
Atomic Number
Definition
The number of protons in the nucleus of a particular atom. The symbol for atomic number is Z, and each element has a unique atomic number.
Term
Wave Functions
Definition
The solutions to arithmetic expressions that express the energy of an electron in the atom.
Term
Orbital
Definition
Strictly speaking, a wave function Ψ. It is convenient, however, to think of an orbital in terms of the probability Ψ squared of finding an electron at some point relative to the nucleus, as the volume inside the boundary surface of an atom, or the region in space where the probability of finding an electron is high.
Term
principal quantum number
Definition
The quantum number (n) of an electron that describes its energy level. An electron with n=1 must be an s electron; one with n=2 has s and p states available.
Term
Shell
Definition
The group of orbitals that have the same principal quantum number n.
Term
Boundary Surfaces
Definition
The surface that encloses the region where the probability of finding an electron is high (90-95%)
Term
Spin Quantum Number (spin)
Definition
One of the four quantum numbers that describe an electron. An electron may have either of two different spin quantum numbers, +1/2 or -1/2.
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