A casualty is the damage, destruction, or loss of property resulting from an identifiable event that is sudden, unexpected, or unusual. 1  A sudden event is one that is swift, not gradual or progressive. 2  An unexpected event is one that is ordinarily unanticipated and unintended.
exists and is an alternate of . The noble gas notation is a notation formed as a result of the electron configuration notation being used in conjunction with noble gases. The noble gas preceding the element in question is written then the electron configuration is continued from that point onwards. The notation is shorter to write and makes it easier to identify elements.
Noble Gases in Electron Configurations An atom's electronic configuration is the way its electrons are arranged in space based on their energies. The configuration is reflected in the element's position in the periodic table. Because noble gases are in the last column of the periodic table and have full valence shells, the electronic configuration of other elements can be written in terms of noble gases.