16.Iron (Fe) has 26 electrons. It is a(n)

atom

cation

anion

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %

Which change to the system wood cause the freely-moving piston to lower?