Solutions for Numbergrid Puzzles. Just find the unique puzzle id for the puzzle you're working on and enter it below to find the solution. For Numbergrid puzzles, the unique ID is a series of eight numbers and/or letters, and is printed below each individual puzzle in the PDF. (i.e. SFA8229A).
The chemical bonding that holds the atoms of a metal together. This bond is formed from the attraction between mobile electrons and fixed, positively charged metallic atoms.
electrostatic bond, electrovalent bond, ionic bond - a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion. metallic bond - a chemical bond in which electrons are shared over many nuclei and electronic conduction occurs. peptide bond, peptide linkage - the primary linkage of all protein structures; the chemical bond between the carboxyl groups and amino groups that unites a peptide.