Hãy dùng chữ số và kí hiệu hóa học diễn đạt các ý sau: 3 nguyên tử aluminium, 6 nguyên tử chlorine, 8 nguyên tử zinc

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

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.

What is the subscript for oxygen in its molecular formula