How many moles of dipyrithione contain 8.0 x 10^24 atoms of n?

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

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons