Chem.120 Exam 1 Equations, Conversions and Constants
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determines the projection of angular momentum; describes the orientation that the subshell takes; m( ℓ ) = -ℓ LESS THAN m( ℓ ) LESS THAN ℓ
designates the sub-level where the electrons can be found; determines shape of the orbital and angular momentum; coincides with s, p, d, f (s=0, p=1, d=2, f=3); ℓ = 0 LESS THAN ℓ LESS THAN n-1
E = hc/λ or E = hν
any energy state higher than the ground state (n = 2, 3, ....)
designates the main energy level (shell); describes electron cloud size; n = 1, 2, 3, ....
designates the spin of the electron; describes electron behavior, not the location; m(s) = -1/2 (counter-clockwise) or 1/2 (clockwise)
c = 2.998 × 10^8 m/s
E = (-hcR(∞)) x (1/n^2), where -hcR(∞) = -2.18 x 10^-18 and n = principle quantum number
A very small unit of length, 10^-10 m, approximately the size of an atom, Å
ΔE = hc/λ = -13.59 eV * ([1/n(f)^2] - [1/n(i)^2]); 2nd eqn. used to determine the transitions between the energy levels of the hydrogen atom as defined by their principle quantum numbers n(f) and n(i)