Respuesta :

Answer:

kr means krypton

krypton atomic number is 36

electronic configuration: 1S² 2S² 2P⁶ 3S² 3P⁶3d¹⁰ 4S² 4P⁶

Explanation:

in other forms:

[Ar] 3d¹⁰ 4S²4P⁶