Answer:
I believe Si12H26+02 is the coefficient I might be wrong, Sorry if I am.
Iron and steel are magnetic in nature. So you can use a magnet to separate them
Answer:
It becomes a positive ion and its radius decreases
Explanation:
As per the Octet rule, Barium has 2 electrons in its outermost shell. When it loses the two electron it gains two positive charge i.e Ba2+. As the barium loses the two electron from its outermost shell, the outermost shell becomes vacant and thus is no more considered as a part of atomic geometry of the barium atom and since the outermost shell is considered negligible the radius of barium atom reduces automatically.
It will dissolve fastest in a cup of hot water.