An element has the following electron arrangement.
shell 1:2 electrons shell 2: 8 electrons shell 3:18 electrons shell 4:18 electrons shell 5:7 electrons
The Lewis structure for this element would be:

Question

Quizplus · Accepted Answer

The Lewis structure for an element is based on its valence electrons, which are the electrons in the outermost shell. The electron arrangement given in the question shows that the element has 7 valence electrons in its fifth shell. Therefore, the Lewis structure would show 7 dots around the chemical symbol representing the element, arranged singly or in pairs to represent the valence electrons. The fact that the element has electrons in other shells is not relevant to the Lewis structure.

An Element Has the Following Electron Arrangement