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.
What is Molecular Geometry? Molecular geometry is the three dimensional arrangement of atoms of a molecule in the space. Atoms are arranged in this way, to minimize the bond-bond repulsion, bond-lone pair repulsion and lone pair-lone pair repulsion. Molecules with the same number of atoms and electron lone pairs tend to accommodate the same geometry. Therefore, we can determine the geometry of a molecule by considering some rules. VSEPR theory is a model, which can be used to predict the molecular geometry of molecules, using the number of valence electron pairs.