The periodic table is arranged by groups and periods. The groups are vertical columns that go by number of valence electrons. The periods are horizontal rows that increase going down in number of electron shells. The noble gasses are all on the right side, and they have full valence electron shells.
Ions of the same element have the same number of protons and mass, but they have a different number of electrons, valence electrons, and neutrons. An ion is formed when an element gains or loses electrons. If it loses electrons, it becomes more positively charged, as electrons have a negative charge. If it gains electrons, it has more of a negative charge. If you look on the periodic table, you will see the elements electron configuration. This also shows how many valence electrons an element has. You can see the charge in the top right corner.
No comments:
Post a Comment