This report on Door Lock & Lockset Manufacturing: 1  Provides Market Size information to assist with planning and strategic decisions. 2  Includes the necessary information to perform SWOT, PEST and STEER analysis. 3  Helps you understand market dynamics to give you a deeper understanding of industry competition and the supply chain.
Your first step should be to analyse the compound. For example, if the compound is carbon, you know it always has a valence of four, so, if it has a formula C2H4 (ethylene) it obviously has a double bond. There are difficulties here because benzene C6H6 can be considered to have 6 1.5 C-C bonds, being aromatic.
Since four electrons are shared between two atoms in a double bond, more energy is required to break the bonded atoms apart compared to a single bond. Breaking a double bond between oxygen atoms requires three times the energy necessary to break a single bond between oxygen atoms. The same is true for nitrogen. What makes a double bond stronger also makes it shorter. The average bond length for a carbon double bonded to another carbon is 13% shorter than that of two single bonded carbons.