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13.Nuclei
easy
Mark the correct statement
A
Nuclei of different elements can have the same number of neutrons
B
Every element has only two stable isotopes
C
Only one isotope of each element is stable
D
All isotopes of every element are radioactive
Solution
(a) Nuclei of different elements having the same mass number are called isotones
$e.g.,$ $_4B{e^9}$ and $_5{B^{10}}$
Standard 12
Physics