QQuestionChemistry
QuestionChemistry
"Which statement is true of the halogens?
A. They are found in nature as free elements.
B. They readily lose two valence electrons.
C. Their electron configuration ends with p^5.
D. They have an oxidation state of + 1."
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Answer
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Step 1:Let's solve this step by step:
Step 2:: Understand the Characteristics of Halogens
Halogens are Group 17 (VIIA) elements on the periodic table, which include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Step 3:: Analyze the Electron Configuration
Halogens have an electron configuration that ends with $$ns^{2}np^{5}$$, which means they have 7 valence electrons.
Step 4:: Evaluate Each Option
- TRUE: Their valence shell configuration always ends with $$p^{5}$$ electrons.
A. Found in nature as free elements - FALSE: Halogens are highly reactive and typically exist as compounds, not free elements. B. Readily lose two valence electrons - FALSE: Halogens typically gain ONE electron to complete their octet, not lose two. C. Electron configuration ends with p^5 D. Have an oxidation state of + 1 - FALSE: Halogens typically have an oxidation state of - 1 when forming ionic compounds.
Final Answer
Their electron configuration ends with p^5.
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