Oxidation of the cyanide ion produces the stable cyanate ion, . the fulminate ion, , on the other hand, is very unstable. in fact, fulminate salts explode when struck; mercury(ii) fulminate, , is used in blasting caps. draw the lewis structures and assign formal charges for the cyanate ion and the fulminate ion. ( is the central atom in and is the central atom in .) include all resonance structures for each ion, and assign non-zero formal charges next to each atom.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.