what information on the periodic table is used to complete electron dot diagrams?\nthe number before the a…

what information on the periodic table is used to complete electron dot diagrams?\nthe number before the a at the top of a column shows how many dots to draw in the diagram.\nthe number before the b at the top of a column shows how many dots to draw in the diagram.\nthe number at the left of each row shows the number of valence electrons that are in atoms of elements in that row.\nthe number at the left of each row shows how many dots to draw above the symbol for elements in that row.

what information on the periodic table is used to complete electron dot diagrams?\nthe number before the a at the top of a column shows how many dots to draw in the diagram.\nthe number before the b at the top of a column shows how many dots to draw in the diagram.\nthe number at the left of each row shows the number of valence electrons that are in atoms of elements in that row.\nthe number at the left of each row shows how many dots to draw above the symbol for elements in that row.

Answer

Brief Explanations:

In the periodic - table, for main - group elements (groups labeled with A), the number before the A at the top of a column represents the number of valence electrons. Electron - dot diagrams are based on the number of valence electrons. So, this number is used to draw the dots in the electron - dot diagram.

Answer:

The number before the A at the top of a column shows how many dots to draw in the diagram.