The element in period 4 that has four electrons in its electron dot structure is Silicon (Si).
Silicon is located in group 14 of the periodic table. In terms of its electron configuration, Silicon has a total of 14 electrons. The first two electrons fill the first energy level (1s2), and the next eight electrons fill the second energy level (2s2 2p6). The remaining four electrons are found in the third energy level, specifically in the configuration of 3s2 3p2.
When we draw the electron dot structure (or Lewis dot structure) for Silicon, we represent the outermost four electrons with four dots around the symbol for Silicon (Si), which illustrates its tendency to form covalent bonds by sharing or transferring electrons with other elements to achieve stability.