Sn is Tin which has 50 atomic number
it means it has 50 electrons in its outer shells
+2 shows its valency
plus sign comes when electrons are removed from an atom
so here 2 electrons are removed from Sn atom
remaining electrons are 50-2
48 electrons
<span>4)Increase the mass of both object A and object B.
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Answer:
Closure is the process of: Closing
Explanation:
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