The total black bear population is estimated to be between 600,000 to 700,000 (excluding baby cubs). Habitat distribution information suggests about 55% live in Canada, 40% live in the United States, and 5% are in Mexico (accurate population facts south of Mexico unknown).
The six electrons can't all go around the nucleus at the same distance-only two electrons can fit in the inner shell. So some of the electrons have to go farther away from the nucleus. A carbon atom has two shells, with two electrons in the inner shell and four electrons in the outer shell.But that outer shell could hold as many as eight electrons-it's not full.ost of what we use for fuel is made of carbon, too. Coal, gasoline, oil, and wood are all made of hydro-carbons. In the picture you can see leftover carbon dust pouring out of this truck that burns diesel fuel. It's this carbon pouring into the air that's causing global warming.
What is a Carbon Dioxide Molecule? Oxygen and carbon are both non-metals. An oxygen atom has 6 electrons in its outer shell. Oxygen is in group 6 of the periodic table. A carbon atom has 4 electrons in its outer shell. Carbon is in group 4 of the periodic table. Two oxygen atoms and 1 carbon atom will each share two electrons to form four covalent bonds and make a carbon dioxide molecule (CO 2). This is a picture of a carbon dioxide molecule. By sharing the four electrons where the shells touch each oxygen and carbon atom can count 8 electrons in its outer shell. These full outer shells with their shared electrons are now stable, and the CO 2 molecule will not react further with other oxygen or carbon atoms. Each electron pair is one bond.