Question

1. mary works for a chemistry laboratory and her boss tells her that she needs to find an element with 6 valence electrons and 4 shells. describe how she could find that element on the periodic table and what element is it (2 - 3 sentences)

Explanation:

The number of shells corresponds to the period number on the periodic table, so it's in the 4th period. The number of valence - electrons helps determine the group. Elements with 6 valence electrons are in group 16. By looking at the 4th period and group 16 on the periodic table, we can identify the element.

Answer:

The element is selenium (Se). To find it, first, note that the 4 shells mean it's in the 4th period. Then, since it has 6 valence electrons, it's in group 16. Looking at the intersection of the 4th period and group 16 on the periodic table gives selenium.