What type of crystals does iodine, dry ice (co2) , ice and plastic form?

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+