4 Matching Annotations
- Sep 2020
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chem.libretexts.org chem.libretexts.org
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Because elements in periods 3 and 4 rarely form multiple bonds with themselves, their multiple bond energies are not accurately known. Nonetheless, they are presumed to be significantly weaker than multiple bonds between lighter atoms of the same families.
elements in period 3&4 are presumed to be significantly weak
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chem.libretexts.org chem.libretexts.org
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In each case, the phase of the wave function for each of the 2p orbitals is positive for the lobe that points along the positive axis and negative for the lobe that points along the negative axis. It is important to emphasize that these signs correspond to the phase of the wave that describes the electron motion, not to positive or negative charges.
for all 2P orbitals there is a positive lobe and a negative lobe which corresponds to the phase of the wave that describes the electron (not the charge)
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when r is very small, the surface area of a spherical shell is so small that the total probability of finding an electron close to the nucleus is very low; at the nucleus, the electron probability vanishes
r is small = surface area small = total probability of finding an electron close to the nucleus is small (almost vanishes)
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At very large values of r, the electron probability density is very small but not zero.
electron probably is never 0
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