It's a FUSION reaction because Iron and Oxygen react together to make Iron Oxide (rust) and it's EXOTHERMIC because the reaction forms heat (stated above), which means it's releasing energy.
it is silver oxide my friend mark as brainlest t
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silver oxide
Silver oxide is the chemical compound with the formula Ag₂O. It is a fine black or dark brown powder that is used to prepare other silver compounds
A. It is not a solid and not a linguist
The answer is D
Calcium has two electrons in its outer energy shell