A soft silvery metal with a melting point 63.5’C

Find the mass, in grams, of 5.00*10^23 molecules of f2

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals

A5.00 g of a in . g of at aa 5.00 g of b in . g of .?at .