List ONE term (atom, element, ion, molecule, compound) that applies to each of the following: Ca +2:                                                                                         Fe: KCI:                                                                                             N2: CI-:                                                                                              H2O: thanks

Question
  1. List ONE term (atom, element, ion, molecule, compound) that applies to each of the following:

Ca +2:                                                                                         Fe:

KCI:                                                                                             N2:

CI-:                                                                                              H2O:

thanks

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