No piercing is considered fully healed until it's a year old. Contrary to what you may read, it takes the body a full year to season a piercing to the point where it can be removed for extended periods of time without the risk of the piercing closing.
HBr is polar. The Lewis structure shows a central carbon atom forming four single covalent bonds with the four terminal bromines. The central carbon has no lone pairs and four bonding pairs, so the molecular geometry is tetrahedral (as is the electron geometry), and bond angles are thus approximately 109.5 degrees.
Molecular geometry is the three-dimensional shape of a molecule. To determine molecular geometry, first find the number of electron domains surrounding the molecule's central atom. An electron domain may come in four forms: a single bond, double bond, triple bond, or unbonded electron pair.Each is one electron domain.here are two possible shapes: trigonal planar and bent. To find out which it is, determine how many of the electron domains you counted around its central atom are made up of bonds and which--if any--of unbonded electron pairs. If all three are made up of bonds, the molecular geometry is trigonal planar.