Boron exists in BCl3 form while Al can form Al206 because Al or aluminum is highly reactive. Aluminum has the property of being highly reactive with oxygen. This is why it forms Al206.
Formula: BCl3
There are exactly three electron pairs attached to the Boron atom, each one of them bonded to a chlorine atom as well.
It is a trigonal planar molecule; this resembles a 2D equilateral traingle with an Aluminium atom in the middle and the 3 chlorine atoms situated at each of the 3 points on the triangle. The bond angles are 120 degrees. Other examples of trigonal planar molecules are boron trifluoride (BF3) or boron trichloride (BCl3). It is a trigonal planar molecule; this resembles a 2D equilateral traingle with an Aluminium atom in the middle and the 3 chlorine atoms situated at each of the 3 points on the triangle. The bond angles are 120 degrees. Other examples of trigonal planar molecules are boron trifluoride (BF3) or boron trichloride (BCl3).
BCl3 has three single bonds because with 3 single bonds the formal charges of all the atoms are zero. With one double bond and two single bonds the formal charges are incorrect because Cl is more electronegative than B, yet it has a positive formal charge. Despite the incomplete octet on Boron when the structure has three single bonds, the formal charge is still better and formal charge is more important than complete octets.
Nitrogen, has 5 electrons in its outer shell, Boron has only 3. When Nitrogen Bonds with 3 Chlorine atoms, to become NCl3, it still has 2 electrons left in its outer shell, which form a lone pair. As these could bond to a single proton, (i.e. hydrogen without its electron) they have to be shown in the diagram. NCl3 therefore has 3 bonds and 1 lone pair, so 4 things to show in the bond diagram. Making it trigonal pyramidal. However, Boron only has 3 electrons to bond. As these are all used up in the bonds with chlorine, there are only 3 bonding pairs to show in the diagram. Therefore it is trigonal planar. NCl3 has bond angles of 107 degrees whereas BCl3 has bond angles of 120 degrees. Hope this helps.
BCl3
BCl3
BCl3
BCl3
Boron trichloride chemical formula is BCl3
BCl3
BCl3
Formula: BCl3
Formula: BCl3
The bond in boron trichloride, BCl3, is polar covalent.
The color is green, the wavelength emitted by boron.
BCl3 is the formula for Boron Chloride. As a matter of interest it does not obey the octet rule. It is also called a Lewis Acid.