bohr model and lewis dot structure practice\ndraw both for elements 1-20\ndraw bohr only for elements…

Explanation:

Step1: Recall Bohr model rules

The Bohr model shows electrons in circular orbits around the nucleus with specific energy levels. For elements 1 - 20, we need to draw both the Bohr model and Lewis - dot structure. For elements 1 - 20, first find the number of protons (equal to the atomic number), neutrons (approximate mass number - atomic number), and electrons (equal to the atomic number). Then place the electrons in the energy levels: 2 in the first level, 8 in the second level, and so on.

Step2: Recall Lewis - dot structure rules

The Lewis - dot structure shows only the valence electrons of an atom. For elements 1 - 20, after drawing the Bohr model, identify the number of valence electrons and represent them as dots around the symbol of the element.

Step3: For elements 21 - 30

Draw only the Bohr model. Follow the same process as for elements 1 - 20 to determine the number of protons, neutrons, and electrons and place the electrons in the appropriate energy levels.

Step4: For given elements (31, 35, 36, 54, 55, 83, 87)

Draw only the Lewis - dot structure. First, find the number of valence electrons for each element (using the group number in the periodic table) and represent them as dots around the element symbol.

Since this is a drawing - based problem and no single numerical answer can be provided in a simple form, the steps above outline the process for completing the task.