Answer questions 16-21 using the choices below! (A) 2-5 (B) 2-8 (C) 2-8-1 (D) 2-
ID: 1042223 • Letter: A
Question
Answer questions 16-21 using the choices below! (A) 2-5 (B) 2-8 (C) 2-8-1 (D) 2-8-3 (E) 2-8-7 (F) 2-7-1 16) Which electron configuration represents a noble gas in the ground state? 17) Which electron configuration represents an excited atom? 18) 19) Which electron configuration represents an atom with 3 unpaired electrons? Which electron configuration represents a halogen? int do the electron-dot structure) hich electron configuration represents Na in the ground state? 20) Which electron configuration represents a neutral alkali metal in the ground state?Explanation / Answer
(16) (B) Noble gas elements have 8 electrons in their valence shell
(17) (D)
(18) (E) Halogen atoms have 7 electrons in their valence shell
(19) (A)
(20) (B)
(21) (C) Alkali metals have a single electron in their valence shell