Helium and methane, CH4, are both found in natural gas and can be separated by diffusion. What is the ratio of the diffusion rates for the two species? (rate of diffusion for He divided by the rate for CH4)

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

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explanation:

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