S Block Elements Question 103
Question: 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-
Options:
A) $ B{{e}^{2+}} $
B) $ B{{a}^{2+}} $
C) $ P{{b}^{2+}} $
D) $ C{{a}^{2+}} $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] 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 $ B{{e}^{2+}} $ ions do not impart colour to the flame.
BETA
