If you mean "electron configuration" then: Long-hand version: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 Short-hand version: [Kr] 5s^2 Note: The "^" symbol means the the following number is in the form of a superscript.
+2
A strontium ion has a charge of +2
Charge
Strontium Ion
An isotope has extra or fewer neutrons in the nucleus than the average number for that element. This may or may not result in a radioactive isotope. An ion has extra or fewer electrons orbiting the nucleus. This usually increases the chemical reactivity.
36 electrons are there in Sr2+ ion
A strontium ion has a charge of +2
A strontium ion has a charge of +2
The strontium ion is positive, divalent, Sr2+.
+2
Charge
The name given to the electrical charge on an ion is a oxidation number. The charge of the ion typically formed by strontium is 2 plus.
Strontium Ion
An isotope has extra or fewer neutrons in the nucleus than the average number for that element. This may or may not result in a radioactive isotope. An ion has extra or fewer electrons orbiting the nucleus. This usually increases the chemical reactivity.
Te or Tellurium
Strontium (Sr) Sr2+ ion and krypton have he same electronic configuration
strontium is a metal, therefore it must form only positive ions.
36 electrons are there in Sr2+ ion