Write the molecular formula of ferric oxide and calcium hydroxide by criss-cross method

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.

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?

Which substance has non polar covalent bonds