When the equation: __fe2o3(s) + __co(g) → __fe(l) + __co2(g) is correctly balanced using the smallest whole numbers, the coefficient of fe(l) is

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

What if it is did darwin used to support his theory of evolution

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