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Name the 4 quantization numbers in order
- N - Principle Quantum number
- L - Azimuthal (shape) number
- M - Magnetic number
- S, or spin - quantum number
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What is the electron configuration.
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10
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What are the valence electrons.
Valence electrons are the ones in the the orbitals largest principle principle quantum number, or the 2outer most valence shells.
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What is the stable octet rule?
Based on principle that atoms in a molecule like to have or share 8 electrons, making them stable or happy.
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What is VSEPR theory?
The theory that electrons will always be repelled by other pairs of electrons, into a shape where the electron pair repulsion are best minimized.
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shapes of VSEPR molecules
- 2 sets of bond pairs
- Linear, 180*
- 3 sets of bond pairs
- Trigonal planar, 120*
- 4 sets of bond pairs
- Tetrahedral, 109*
- 2 sets bond, 1 lone pair
- Bent
- 3 sets bond pairs, 1 lone pair
- Trigonal pyrimidal
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n = m
M
Number of moles = mass of substance (g) divided by the Molar Mass (g mol)
Answer given in mol
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c = n
V
Concentration (mol per L) = number of mol divided by volume (in litres)
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