It is a simple model of sodium or natrium atom. This atom has an atomic number 11. The electronic configuration of Na is (2, 8, 1). This atom doesn't exist in the nature. We never find it in our the daily life. Natrium is a metal in the IA group, periodic table of elements. In the nature we found it as a compound, the example is a table salt, sodium chloride, NaCl. What kind of compound NaCl is? You have thought before, this is an ionic compound, because metal combines with non metal, so there is a transfer of electrons from metal to non metal. NaCl(s) consists of Na+ ions and Cl- ions. These ions link together closely and forms a crystal.The question is why natrium in the nature acts as Na+ ions in the NaCl rather than Na atoms? It is because of one electron of Na in the outer shell is not stable? If yes, what is the reason? Please explain clearly. After that, think about potassium and then calcium. Make a generalisation about the activity of metals.
No comments:
Post a Comment