Can anybody pls help me with chemistry how to balance an equation of class 7 ??? pls really I don't like chemistry..
I need only the step(s)..

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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?