APPLY What differences do you notice between iron(II) oxide and iron(III) oxide? How does the charge of the iron ions result in
different chemical formulas? How does this affect the properties of
each substance?

Which statement is best described as a atom

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)