which of the following symbols would be included in the noble - gas notation for an element that had valence…
which of the following symbols would be included in the noble - gas notation for an element that had valence electrons in the 5s subshell?\no ar\no kr\no xe\no rn
Answer
Brief Explanation:
Noble - gas notation uses the noble - gas core that comes before the element in the periodic table. The 5s subshell starts after the noble gas Kr (krypton). Kr has a complete electron configuration up to the 4p subshell. When writing the noble - gas notation for an element with valence electrons in the 5s subshell, we use Kr as the noble - gas core.
Answer:
B. Kr