Z=12 is magnesium. The electron configuration 1s2 2s2 2p6 is isoelectronic with neon, so my best guess is that it's a convoluted way of writing Mg++.
Oxygen tends to gain two electrons to complete its "octet", making it O2- with the electron configuration 1s22s22p6
If a sodium atom loses an electron to become a Na+ ion, its electron configuration will be the same as neon (1s22s22p6). Both sodium and neon have stable electron configurations.
Fluorine's most stable ion configuration is F-, also known as the fluoride ion. Fluorine gains one electron to achieve a full outer energy level, making it isoelectronic with the noble gas neon and achieving a more stable electron configuration.
The electron configuration for an atom of fluorine is [He]2s2.2p5.
The lowest energy excited state electron configuration of O2 is 1s2 2s2 2p4. This configuration represents the two oxygen atoms in a triplet state where one electron is promoted from the 2p to the 2π* antibonding orbital.
1s22s22p6
1s22s22p6
Mg2+: [1s22s22p6]
1s22s22p6.
1s22s22p6
Oxygen tends to gain two electrons to complete its "octet", making it O2- with the electron configuration 1s22s22p6
That's correct! Sulfur (S) is in the third row, so it has electrons in the third energy level. The first two levels are completely filled, giving 1s22s22p6 and it has six electrons in the third level, giving 3s23p4.
Helium's electron configuration is 1s2. Neon's electron configuration is 1s22s22p6. All of the rest of the noble gases, like neon, have the maximum number of electrons in their outermost s and p orbitals (valence shells), which is eight.
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If a sodium atom loses an electron to become a Na+ ion, its electron configuration will be the same as neon (1s22s22p6). Both sodium and neon have stable electron configurations.
The element magnesium (atomic number 12) has the electron configuration of1s2 2s2 2p6, 3s2or the noble gas abbreviation [Ne] 3s2(see related link)The electron configuration for neutral magnesium (Mg) is 1s22s22p63s2. The ion, Mg2+, has two electrons fewer, so the outer two electrons are removed from the electron configuration. This changes the electron configuration to 1s22s22p6, which is the same electron configuration as the noble gas neon.
In the Z-parameter Equations the independent parameters are Currents i.e., i/p And O/p . therefore to find any of the parameter(Z11,Z12,Z21,Z22) We have to either open circuit the input or the output port .as we are open circuiting any one of the port the Z-parameters Are called as open circuit parameters Got It ! Clear!