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18/12/2021 12:13 pm
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A chloride dissolves appreciably in cold water. When placed on a Pt wire in bunsen flame, no distinctive colour is noted. Which cation could be present?
(a) Be2+
(b) Ba2+
(c) Pb2+
(d) Ca2+
1 Answer
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18/12/2021 12:14 pm
Correct answer: (a) Be2+
Explanation:
Due to very high I.E. of Be, its valence electrons require high energy to remove (excite) which is not available in bunsen flame hence Be2+ ions do not impart colour to the flame.