Question

question 28 1 pts which of the following is the shorthand configuration (noble gas notation) for tin? kr 5s² 4d¹⁰5p² xe 5s² 4d¹⁰5p² rn 6s² 4f¹⁴ 5d¹⁰ 6p² kr 4s² 3d¹⁰ 4p² question 29 1 pts atoms have a tendency to acquire eight electrons in their outermost or valence shell leading to fully occupied subshells. this rule is known as the octet rule full subshell rule valence rule hunds rule

Explanation:

For Question 28: Tin (Sn) has an atomic number of 50. The noble - gas notation starts with the nearest noble gas with a lower atomic number, which is Kr (atomic number 36). After Kr, the electron configuration continues as $5s^{2}4d^{10}5p^{2}$.
For Question 29: The tendency of atoms to acquire eight electrons in their outermost or valence shell to achieve a stable electron - configuration with fully occupied subshells is known as the octet rule.

Answer:

Question 28: [Kr] $5s^{2}4d^{10}5p^{2}$
Question 29: octet rule