Rubidium is found in Group 1 of the Periodic Table - OCR Gateway - GCSE Chemistry: Combined Science - Question 3 - 2021 - Paper 10
Question 3
Rubidium is found in Group 1 of the Periodic Table.
Bromine is found in Group 7.
Rubidium and bromine react together to form an ionic compound.
Which row shows th... show full transcript
Worked Solution & Example Answer:Rubidium is found in Group 1 of the Periodic Table - OCR Gateway - GCSE Chemistry: Combined Science - Question 3 - 2021 - Paper 10
Step 1
Electron change lost
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Answer
Rubidium (Rb) is an alkali metal located in Group 1 of the periodic table. Alkali metals typically lose one electron to achieve a noble gas configuration. Therefore, the electron change for rubidium is that it loses one electron.
Step 2
Formula of a rubidium ion
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Answer
When rubidium loses an electron, it forms a positively charged ion denoted as Rb+. Thus, the correct answer indicates the formation of Rb+ as the ion.
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