A. 2.0x1024 atoms of s to moles (3.3)

Which metal exist in liquid state and can be cut with knife ?

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

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?