Describe very briefly the process by which fluorine becomes an ion and the the sign of the charge that it acquires

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

What can be found in the ionosphere

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