Give the quantum number set for one electron in the 3p sublevel of a sulfur (s) atom.

The electronic configuration of sulfur is expressed as:
1s^2 2s^2 2p^6 3s^2 3p^4

At the 3p sublevel,

principal quantum no - 3
angulum quantum no - 1
magnetic quantum no - (-1), 0, (-1)
spin quantum no - (+1/2), (-1/2)

The set of quantum numbers would be:
[ 3 , 1, -1 , +1/2 ] or [ 3 , 1, -1 , -1/2 ]
[ 3 , 1, 0 , +1/2 ] or [ 3 , 1, 0 , -1/2 ]
[ 3 , 1, 1 , +1/2 ] or [ 3 , 1, 1 , -1/2 ]

D)can be increased in a closed system

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom