The answer should be A.
Hope this helps :-)
It would be a positive charge because it lost two electrons, if the charge was neutral it would be the same amount of protons and electrons, if the charge was negative the electrons would be 20 instead of 18. So in this case it is positive.
The answer is Silver (Ag)
Answer:
The answer should be 1000 kg / m3
100% find the gfm of both sides then divide