Location on the Periodic Table >
Because bismuth is in group 15, which is 5A (A standing for the groups that do not contain transition metals). Thus, bismuth would have 5 valence electrons. Now, looking at the 78 core electrons, we can build the complete electron configuration for this element. The following diagram shows the orbitals that are filled when one goes across the periods. Thus, by looking at the location of bismuth, we create its electron configuratoin by adding all the different pieces that are added as we go down the periodic table. The full version of bismuth's electron configuration is as follows:
If we were to use the noble gas shorthand, the first 54 electrons would be replaced with xenon, as follows:
So, if we were to add all the electrons from the above electron configuration,
Remember, the f orbital has to included before the d orbital because bismuth is after the lanthanide series.
Another way to look at how the electrons are arranged in bismuth is in orbitals. These are the numbers that students' in Mr. Bechlem's chemistry class see on the right side of the large wall-size periodic table. Bismuth occupies the electrons shells of 2,8,18,32,18,5. This is the reason that bismuth is in period six.
This image is not the basic electron orbitals that are seen in lower level classes. But rather this is very realistic, for it shows the shapes of the differnt types of orbitals and how they look all together. Of course, this is the kind of thing that HONORS chemistry students are aware of. But just for those who are interested, here is the bismuth's electrons in shells.
Bismuth 209 Atomic Number
Bismuth Atomic Number With Mass
Bismuth (Bi) Atomic Data for Bismuth (Bi) Atomic Number = 83 Atomic Weight = 208.9804 Reference E95: Isotope: Mass: Abundance: Spin: Mag Moment: 209 Bi. Bismuth oxide (Bi 2 O 3) Bismuth subgallate (C 7 H 5 BiO 6) Bismuth subsalicylate (C 7 H 5 BiO 4) Bismuth telluride (Bi 2 Te 3) Interesting facts: It was known to the ancients. It is a hard, brittle, steel-grey metal with a pink tint. It is stable in oxygen and water.