SEARCH Articles Figures Tables Bonding, immobilization methods covalent Covalent Bond Classification Method Covalent Bond Formation-Molecular Orbital (MO) Method Covalent bonding, nonspecific methods Covalent bonds estimation methods Covalent bonds molecular orbital methods Direct Covalent Bond Formation Method Method 1 Covalent Molecular covalent-bonding methods Poly covalent bonding methods Protein immobilization methods covalent bonding