H2se is a ionic bond which requires higher energy to change into a gas, while h2s is a covalent bond requiring less energy
Answer:
The atomic radius (r) of an atom can be defined as one half the distance (d) between two nuclei in a diatomic molecule. Atomic radii have been measured for elements. The units for atomic radii are picometers, equal to 10−12 meters
Hhhhhhhhchchhchchchchchchchchchchchchchchc
