Risk which is common to an entire class of assets or liabilities. The value of investments may decline over a given time period simply because of economic changes or other events that impact large portions of the market.
Properties of the alpha-helix. 1  The structure repeats itself every 5.4 Angstroms along the helix axis, ie we say that the alpha-helix has a pitch of 5.4 Angstroms. Alpha-helices have 3.6 amino acid residues per turn, ie a helix 36 amino acids long would form 10 turns.
Properties. All halogen characteristics can be attributed as occurring due to the innate physical and chemical properties that the elements of this group possess in common. The following table summarizes the various properties of halogens. unique characteristic of halogens is that it is the only group in the entire periodic table that is composed of elements that belong to all three classical states of matter (solid, liquid, and gas), when kept under standard conditions of pressure and temperature. Important Characteristics.