The ballon will be attracted to the rod.
A. [1,2] sigmatropic hydrogen migration
D
A describes liquid, b describes solid, and c describes solid as well. therefore d is the only good answer
Explanation:
Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Nitrogen 7 2,5 Oxygen 8 2,6 Fluorine 9 2,7 Neon 10 2,8
The elements of these groups are called representative elements.
A it increases is the correct answer.
Good luck and I hope this helps.!