Examlex
One of the problems when evaluating secondary data is that the data may be updated too frequently for the purpose of the problem at hand.
Electron Shell
The grouping of electrons surrounding the nucleus of an atom, where electrons exist in fixed energy levels.
Octet Rule
A chemical rule of thumb that states atoms tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
Isoelectronic
Describes atoms, molecules, or ions that have the same number of electrons and similar electronic structure, but different nuclear charges.
Octet Rule
A chemical rule of thumb that states atoms tend to combine in such a way that they each have eight electrons in their valence shells, giving them the same electron configuration as a noble gas.
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