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.
1) Chemical formula. It shows the types of atoms in the molecule, and, using subscripts, it shows how many of each type of atom is present. The Chemical formula of butane is C 4 H 10. 2) The structural formula of a molecule shows the symbol for every atom, and it shows every bond.3) The condensed structure of a molecule shows the symbol of every central atom and of each ligand or set of ligands bonded to a central atom.) A benzene molecule contains six carbon atoms in a closed ring, it has 3 carbon-carbon double bonds and six hydrogen atoms. Using ChemSketch or on a sheet of paper, write the chemical formula, condensed structure, structural formula, and line structure of benzene.