Atoms with large nuclei have undtable nuclei. theses elements are called

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

What is the molar mass of a gas that has density of 2.054 g/l

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?