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20 Cards in this Set
- Front
- Back
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Describe the Bohr Model of an atom |
-Orbital diagram or -"Solar system" |
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Rutherford's experiment proves what? |
That an atom is made up of an electron cloud and a nucleus.
And that the nucleus of an atom is extremely massive comparative to its electron cloud |
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What does energy of a quantum of EM Radiation depend on? |
A photon (1 unit of energy) depends on frequency |
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Order forms of EM Radiation & color of light by frequency |
(Low freq) -Radiowaves -Microwaves -Infrared -Visible light -UV light -X rays -Gamma rays (High freq) |
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Example of an abbreviated orbital diagram |
5s 5p Te [Kr] (^v) (^v)(^ )(^ ) |
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Give # of protons, electrons, and neutrons in a given isotope |
E.g. 16 O 8 Protons: 8 Electrons: 8 Neutrons: (16-8 = 8) 8 |
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Orbital |
Part of space where electron is highly likely to be located |
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Shell |
Group of orbitals having the same size Each shell contains 1 S orbital and 3 P orbitals |
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Subshell |
Group of orbitals that share the same size, shape, and energy
E.g. 5s = (Group of all S orbitals in shell 5) |
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Isotopes |
Atoms of same element which have different # of neutrons E.g. 79 81 Br Br 35 35 Bromine-79 is an isotope Bromine-81 is an isotope An atom cannot be an isotope unless there is another similar atom of the same element to compare it to |
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Average atomic mass |
Weighted average of all isotopes of a given element |
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Atomic # |
The number of protons in an atom |
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Mass # |
Sum of protons and neutrons, given in AMU |
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Location of metals in the periodic table |
Left and under of "staircase" |
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Location of non-metals in periodic table |
Right and above of "staircase" |
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Alkali metals |
1st column (except H) [Reactive] |
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Noble gasses |
Last column [Non-reactive] |
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Halogens |
2nd column from right [Very reactive] |
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Representative elements |
Outer columns (1st two columns and last 6 columns; not including middle of periodic table) [Predictable] D & F subshells completely filled/empty |
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Transition elements |
Columns not on the 1st two/last 6 [Poorly predictable] Partially filled D & F subshells |
