JAMB Chemistry 2014 Objective — Question 5
Question 5 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2014 Objective paper, with the correct answer and a full explanation.
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An element X has electron configuration 1s²2s²2p⁶3s²3p⁵. Which of the following statement is correct about the element?
- A. It is a halogenCorrect
- B. It has a completely filled p-orbital
- C. It has 5 electrons in its outermost shell
- D. It belongs to group II on the periodic table
Explanation
Since it has seven electrons at its outmost shell, it is a group (VII) element. Elements in group (VII) are also known as halogens.
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