Published by:
CGP EDU Academic Team
Published on: August 14, 2026
In which one of the following pairs, the two species are both isoelectronic and isotopic? (Atomic number: 
)
A
and 
B
+ , and 
+
C
and 
D
and 
Text Solution
Verified by ExpertsThe correct answer is:
B
and 
both contain 18 electrons; i.e., they are isoelectronic and isotopic as they have same atomic number that is 19 .
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