![]() State the electron configuration, in condensed notation, of a neutral iodine atom. The electron configuration of a neutral sodium atom can be written in condensed notation as 3s 1 ^1 1.The electron configuration of a neutral iodine atom is indicated by its location in the periodic table. Įxplain why the elements in group 17 are described as being in a different block of the periodic table than the elements in group 1, based on the electron configurations of their neutral atoms. State the name given to the elements in this group. Iodine and astatine are both elements in group 17 of the periodic table. State the most likely period number of element X, assuming that the electron configuration in the diagram is as close as possible to that of the neutral atom.State the name given to elements in group 1 of the periodic table.Įlement X could be found in group 1 of the periodic table. Suggest the block of the periodic table in which element X is likely to be found, giving a reason for your answer. The box-and-arrow diagram for a helium atom is shown below:ĭraw a similar diagram for the atom or ion of element X, including labels for the occupied subshells. Īn alternative method for describing the electron configuration of an atom or ion is to draw the orbitals as boxes and the electrons as arrows. State why it is not possible to determine the position of element X in the periodic table from the electron configuration alone. The diagram does not fully describe the electron configuration of the atom or ion or the identity of element X. An atomic nucleus of element X is surrounded by electron shells, as shown below:
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