Term
| What is the difference between atomic number and atomic mass? |
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Definition
Atomic number = number of protons
Atomic mass (aka atomic weight)= mass of atom [Atomic weight is a convention to define mass of the atom. It is expressed as ratio of grams per mol (g/mol)] |
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Definition
Isotopes = atoms of the same element that have different number or neutrons.
Mass number differ for isotopes. |
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Term
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Definition
Electromagnetic radiation from matter comes in discrete bundles (quanta).
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Term
| What is the energy value of a quantum in terms of planck's constant (h) and frequency of the radiation (f) |
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Definition
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Term
| What is energy of an electron in terms of the Rydberg constant (R) and the quantum number (n) ? |
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Definition
E= - (R/n2)
R = 2.18E-18 J/electron |
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Term
After electrons return to the ground state from an excited state, what is emitted?
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Definition
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Term
| What is the electromagnetic energy of these photons in terms of planck's constant (h), speed of light (c), and wavelength of radiation (l)? |
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Definition
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Term
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Definition
Within a subshell, electrons fill orbitals so that there are maximum number of half-filled orbitals with parallel spin.
(Hund would rather have own room than have to share with roommates) |
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Term
| What are the 4 quantum numbers? |
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Definition
n = shells
l = suborbitals include different orientations: s, p, d, f, etc..
ml = magnetic number
ms = (magnetic ) spin |
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