I. UllUlll examples found numbers of the ionic charges the sistent with the info

Question

I. UllUlll examples found numbers of the ionic charges the sistent with the information same as ions Are the your electrons and provide a they text? Are In summary, configuration appear in examples? does the electron successful model to explain the ionic behavior of Mg and cl THE PERIODIC LAW 5. Reconsider your energy level diagram for magnesium. Imagine adding electrons until you the next element with a configuration that has the same number of valence reached electrons magnesium. a) How many total electrons would this element possess? b) What neutral element would this be? magnesium in the periodic table? c) How is that element located relative to

Explanation / Answer

7) In the modern periodic table, elements are organized by atomic number. The atomic number is the number of protons in an atom of an element. This number is unique for each element, so it seems like an obvious way to organize the elements. (Mendeleev used atomic mass instead of atomic number because protons had not yet been discovered when he made his table.) In the modern table, atomic number increases from left to right across each period. It also increases from top to bottom within each group.

Chemical properties of each element are determined by the element's electronic configuration, and particularly by its outermost valence electrons. An element's location in the periodic table is largely dependent on its electrons; the number of valence shell electrons determines its group, and the type of orbital in which the valence electrons lie in determines the element's block. In addition, the total number of electron shells an atom determines which period it belongs to. Because of its structure, the periodic table has become an extremely useful tool for assessing and predicting elemental and chemical trends.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---