Answer:i created brainly follow me and u grt all the answers u need
Explanation:
iondine
bromine has 185pm, astatine haa 200, iondine has 140 and lastly fluorine has 147. so iondine has the smallest atomic radius
Answer:
Ecology.
Because you are epic.
Answer: 1mole
Mole = concentration× Volume (dm3)
Mole = 2× 500/1000
84
²²²₈₆Rn → ²¹⁸₈₄Po + ⁴₂He
