Rubidium is in Group I of the Periodic Table and bromine is in Group VII. Rubidium reacts with bromine to form an ionic compound. Which row shows the electron change taking place for rubidium and the correct formula of the rubidium ion?
A.
B.
C.
D.
Exam No：0620_w20_qp_22 Year：2020 Question No：9
Answer:
C
Knowledge points:
2.4.3. Describe the formation of ionic bonds between elements from Group I and Group VII, including the use of dot-and-cross diagrams
Solution:
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