Cuál es la Masa en Gramos de 3,5 moles de H2O?

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Why is retrograde motion an apparent motion