20 points+ brainliest moseley's main contribution to the development of the modern periodic table was which of the following? a) atomic mass should be the organizing principle for the periodic table b) atomic number should be the organizing principle for the periodic table c) amount of reactivity should be the organizing principle for the periodic table d) number of neutrons should be the organizing principle for the periodic table

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

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.

The number at the end of an isotope’s name is the number.