A) CaO (s) B) NaCl (s) C) SrO (s) D) CsBr (s) E) KBr (s) 25. Which of these pair
ID: 853840 • Letter: A
Question
A) CaO (s) B) NaCl (s) C) SrO (s) D) CsBr (s) E) KBr (s) 25. Which of these pairs of elements would be most likely to form an ionic compound? A) p and Br B) Cu and K C) C and O D) O and Zn E) Al and Na 26. An anion is defined as A) a group of stable atoms. B) an atom or group of atoms with a net positive charge. C) a stable atom. D) a charged atom or group of atoms with a net negative charge E) neutral. 27. Using periodic trends, place the following in order of increasing electron affinity. (Start with the lowest) P Si Cl S A) Cl, S, P, Si B) P, Si, S, Cl C) Si, P, S, O D) P, S, Si, Cl E) Si, S, Cl, PExplanation / Answer
25.d)Zn and O
27.a)Cl,S,P,Si