The symbol of an element represents one atom of that element. e. g., ba=

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

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?

How many neutrons does an element have if its atomic number is 50 and its mass number is 166