there is only one unpaired electron in copper
The electron configuration of copper in the ground state is [Ar] 3d10 4s1, so the highest principal quantum number is 4.
4
5
Zinc atoms contain 30 electrons in the electron configuration 1s22s22p63s23p63d104s2. There are a total of 7 sublevels that contain electrons in an atom of zinc in the ground state.
There are several such elements. All of them are in group 13. Those elements are boron, aluminum, gallium, indium, and thallium.
Solid sulfur is sulfur in the solid state of matter.
Minor quibbling about the format of the question aside, sulfur is the element with that ground state electronic configuration.
Ground state configuration is nothing but the Electronic configuration of the metal in the ground state ie, the thing under normal condition. So, obviously the Ground state configuration of magnesium in [Ne] 3s2 (Atomic number 12).
5
The 2s and 2p sublevels in the second principal energy level are completely occupied in the ground state of a sodium atom.
The 3p level
Zinc atoms contain 30 electrons in the electron configuration 1s22s22p63s23p63d104s2. There are a total of 7 sublevels that contain electrons in an atom of zinc in the ground state.
The symbol for sulfur is S. Its electron configuration is 1s22s22p63s23p4
3d5 4s1
the lowest energy level occupied by an electron when an atom is in its most stable energy state
how would i know it is 2
1s2 2s2 2p6 3s2 3p4
There are several such elements. All of them are in group 13. Those elements are boron, aluminum, gallium, indium, and thallium.
sulfur is a solid
Solid sulfur is sulfur in the solid state of matter.