NY Regents Chemistry Exam June 2022
9 Krypton atoms in the ground state tend not to bond with other atoms because their
(1) second electron shell contains eight electrons
(2) third electron shell contains eighteen electrons
(3) innermost electron shell contains two electrons
(4) outermost electron shell contains eight electrons
Explanation: Noble gases are elements in group 18 on the Periodic Table. Noble gases are very stable because they have a filled outer shell of electrons (8).
Answer: 4