Idon't have much time plz me if you are really good at science come to my question which fossil fuel creates the least amount of pollution when it is burned? a. bituminous coal b. petroleum c. natural gas d. anthracite

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)