A) isotopes
B) isotones
C) isobars
D) isosters
Correct Answer: B
Solution :
In \[_{\text{6}}^{\text{13}}\text{C,}\] number of protons/electrons = 6 number of neutrons\[~=13-6=7\] In \[_{\text{7}}^{\text{14}}\text{N,}\] number of protons/electrons = 7 number of neutrons \[=14-7\text{ }=7\] Since,\[_{\text{6}}^{\text{13}}\text{C}\] and\[_{\text{7}}^{\text{14}}\text{N}\] have same number of neutrons, they are called isotones.
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