Neon - one of the stable and unreactive elements of group 8.
The element sulfur (element number 16) has an orbital configuration of 1s2 2s2 2p6 3s2 3p4.
The element with a valence electron configuration of 2s2 is beryllium. Beryllium has 4 electrons, with 2 in the 2s subshell, which makes it have a valence electron configuration of 2s2.
The electronic configuration of calcium is 2882. This means that it has 20 electrons in total, with 2 electrons in the 1s orbital, 8 electrons in the 2s orbital, 8 electrons in the 2p orbital, and 2 electrons in the 3s orbital.
The element with a valence electron configuration of ns2 np4 is sulfur (S). Since it needs to gain 2 electrons to achieve a stable electron configuration, it is most likely to form an ion with a charge of -2.
This electron configuration is for osmium (Os).
The element is Argon. Its configuration is 2 8 8.
The element sulfur (element number 16) has an orbital configuration of 1s2 2s2 2p6 3s2 3p4.
Potassium.
There is no element such as 12M. Assuming that you mean 12Mg, the electron configuration is 2, 8, 2.
[Ne] 3s2 3p5 or 2, 8, 7
Nickel has the atomic number 28 so it has the electron configuration 1s22s22p63s23p64s23d8 .
If you think to neon this energy is 2 080 kJ/mol.
The atomic number of zinc is 30. Its abbreviated electron configuration is [Ar]4s23d10 The full electron configuration is 1s22s22p63s23p64s23d10 (configurations for the atom in its ground state. Ions and excited atoms have different configurations).
Magnesium. 2+8+2=12 electrons so it also has 12 protons., Mg has proton number 12. You can tell by looking that is is in group 2 as the outer shell has 2 electrons. It has 2 filled inner energy levels and 2 electrons in the outer shell.
Oxygen gains 2 electrons to achieve a full valence shell with 8 electrons. This gives oxygen a stable electron configuration similar to the noble gas configuration.
What element has 2 electrons in the first shell and 8 in the second and 6 in the third
This electron configuration represents Sr or Strontium. 2-8-18-7-3 represents Sr in the excited state; 2-8-18-8-2 represents Sr in the ground state.