Calculate the moles of H2 that are needed to form 4.3 moles of NH3

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

In which phase(s) do the molecules take the shape of the container?

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n