Question

which of the following is the correct noble gas notation(shorthand) for tin? a) ar 5s25d105p2 b) kr 5s25d105p2 c) ar 5s24d105p3 d) kr 5s24d105p2

Explanation:

Tin (Sn) has an atomic number of 50. The noble - gas core that precedes its outer - shell electrons is Kr (krypton, atomic number 36). After the Kr core, the electron configuration is \(5s^{2}4d^{10}5p^{2}\).

Answer:

b) [Kr] \(5s^{2}4d^{10}5p^{2}\)