An element X has electron configuration 1s2 2s2 2p6 3s2 3p5. Which of the following statements is correct about the element?
-
A.
lt has a completely filled p-orbital -
B.
lt has 5 electrons in its outermost shell. -
C.
lt belongs to group ll on the periodic table -
D.
lt is a halogen
Correct Answer: Option D
Explanation
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