A) \[_{20}{{X}^{40}},\,{{\,}_{21}}{{Y}^{40}}\]
B) \[_{20}{{X}^{40}},\,{{\,}_{20}}{{X}^{41}}\]
C) \[_{40}{{X}^{20}},\,{{\,}_{41}}{{X}^{20}}\]
D) none of these
Correct Answer: B
Solution :
Isotopes are the atoms of same element which have different atomic masses (due to different number of neutrons). They have same atomic numbers. \[\therefore \]Choice (b) is the correct answer because both\[{{(}_{20}}{{X}^{40}},\,{{\,}_{20}}{{X}^{41}})\]nave same atomic number but different atomic mass,
You need to login to perform this action.
You will be redirected in
3 sec
