The answer 1) Oxygen. And another smallest radius is fluorine, because it is the first in the periodic table.
Im not completely sure but It might be Cycling of Matter
It would be letter "B", positive. Anions are the ones with negative charges.
Answer:
two nonmetal elements join together to form covalent compounds
Answer:
option D
Explanation:
Increasing the temperature increases the yield of ammonia and speeds up the reaction as chemical reaction is affected by temperature.
