there is only one unpaired electron in copper
The third principal energy level (n=3) has s, p, and d sublevels. In the ground state, the zinc atom has all the s, p, and d sublevels in the n=3 energy level occupied. Therefore, the total number of occupied sublevels in the third principal energy level of a zinc atom in the ground state is 3.
There are several such elements. All of them are in group 13. Those elements are boron, aluminum, gallium, indium, and thallium.
The atom with five electrons in its outer level and ten in its kernel is a neutral sulfur atom. In its ground state, sulfur has 16 electrons distributed with 2 in the first energy level (kernel) and 2, 8, and 6 in the subsequent energy levels.
The oxidation state of sulfur in SO2 is 4.
Minor quibbling about the format of the question aside, sulfur is the element with that ground state electronic configuration.
In the ground state, a sodium atom in the second principal energy level has two sublevels completely occupied: the 2s and the 2p sublevels. The 2s sublevel can hold a maximum of 2 electrons, and the 2p sublevel can hold a maximum of 6 electrons.
The third principal energy level (n=3) has s, p, and d sublevels. In the ground state, the zinc atom has all the s, p, and d sublevels in the n=3 energy level occupied. Therefore, the total number of occupied sublevels in the third principal energy level of a zinc atom in the ground state is 3.
In the ground state of a chlorine atom, there are 3 occupied sublevels: 1s, 2s, and 2p. Each sublevel can hold a maximum of 2 electrons, giving a total of 2 + 2 + 6 = 10 electrons.
In the ground state, the outermost principle energy level of an argon atom is the third energy level. This energy level contains the 3s and 3p sublevels. The 3s sublevel can hold up to 2 electrons, while the 3p sublevel can hold up to 6 electrons.
The symbol for sulfur is S. Its electron configuration is 1s22s22p63s23p4
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.
The atom with five electrons in its outer level and ten in its kernel is a neutral sulfur atom. In its ground state, sulfur has 16 electrons distributed with 2 in the first energy level (kernel) and 2, 8, and 6 in the subsequent energy levels.
The oxidation state of sulfur in SO2 is 4.
There is one singly-occupied orbital in the valence shell of potassium in its ground state. This is in accordance with Hund's rule, which states that electrons will occupy separate orbitals within a subshell before they start pairing up.