which statement best describes the arrangement of electrons in an atom of fluorine

Answer 1

The arrangement of electrons in a fluorine atom is best described by its electron configuration, which is \( 1s^2 2s^2 2p^5 \). This means that fluorine has a total of 9 electrons: 2 in the first energy level (1s orbital) and 7 in the second energy level (2s and 2p orbitals). The arrangement indicates that the outermost shell contains 7 electrons, making fluorine highly reactive as it seeks to gain one more electron to achieve a stable octet configuration.