Te or Tellurium
Se
Strontium
The element that forms an ion with an electronic configuration of Ar with a -2 charge is oxygen (O). When oxygen gains two electrons, it achieves a stable electron configuration similar to argon.
The element with 10 electrons in its neutral state is neon (atomic number 10). When it forms an anion with a 2- charge, it gains 2 electrons to have a total of 12 electrons, taking on the electron configuration of the noble gas, argon.
Zinc typically forms a +2 charge when it loses electrons to achieve a stable electron configuration.
Argon
Nitride ion has a charge of -3. This is because nitrogen, the element that forms the nitride ion, has 5 valence electrons and gains 3 electrons to achieve a stable electron configuration, resulting in a total of 8 electrons and a charge of -3.
Oxygen
The element that forms an ion with an electronic configuration of Ar with a -2 charge is oxygen (O). When oxygen gains two electrons, it achieves a stable electron configuration similar to argon.
The element that forms a 2+ ion with the same electronic configuration as Ar is Calcium (Ca). When Calcium loses two electrons, it attains the same electronic configuration as argon by having a full outer shell of electrons.
The element with 10 electrons in its neutral state is neon (atomic number 10). When it forms an anion with a 2- charge, it gains 2 electrons to have a total of 12 electrons, taking on the electron configuration of the noble gas, argon.
It forms an octet / stable electronic configuration
Beryllim is an element. It forms a Cation that has a 2+ charge, because it must lose electrons to gain a noble gas configuration. Anions gain electrons which would have a negative charge.
Zinc typically forms a +2 charge when it loses electrons to achieve a stable electron configuration.
Argon
Nitride ion has a charge of -3. This is because nitrogen, the element that forms the nitride ion, has 5 valence electrons and gains 3 electrons to achieve a stable electron configuration, resulting in a total of 8 electrons and a charge of -3.
A lithium ion has a charge of +1
potassium
the atomic no of calcium is 20 so to reach the nearest noble gas electronic configuration it loses 2 electrons and forms + 2 ion.