What kind of charge would the hydrogen atoms have compared to the oxygen atom in the water molecule? note: a water molecule 2 hydrogen atoms and one oxygen atom.

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

How many neutrons does a atom of cobalt have?

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?