Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (z), the sum of (x), (y) and (z) is: (A) 4 (B) 1 (C) 3 (D) 2

Question

Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (z), the sum of (x), (y) and (z) is:

(A) 4
(B) 1
(C) 3
(D) 2

Prashant Kotian · Accepted Answer

Correct answer: C) 3. Number of neutrons in protium = 0 Number of neutrons in deuterium = 1 Number of neutrons in tritium = 2 So, total number of neutrons = 3

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