Aഹീലിയം
Bനൈട്രജൻ
Cനിയോൺ
Dആർഗൺ
Answer:
Related Questions:
Choose the pair of isotones from the following.
(A) 8O17& 8O16
(B) 12 Mg24&11Na24
(C)18Ar40 &19K40
(D)11Na23&12Mg24