Write out the full electron configuration for an atom that has four valence electrons in the second energy level. Use ^ to denote a superscripted value.

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

What does x represent in the formula for the compound xcl4?

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.