The correct option is B.
Sodium will react with elements in GROUP 6, WHICH HAVE SIX ELECTRONS IN THEIR OUTERMOST SHELLS.
Sodium is a metal with atomic number 11. The electronic configuration of sodium is 2,8,1. This implies that, sodium has one electron in its outermost shell. Sodium always donate this electron in order to become stable. Elements in group 6 have six electrons in their outermost shells and they require two more electrons to attain stability. In order to form chemical bonds with elements from group 6, two atoms of sodium will react with each atom of those elements, that is, the ratio of reaction will be 2:1. By so doing, the two sodium atoms will be the ones that will donate the two electrons that the group 6 elements need to attain stability. One example of compounds formed by such reaction is sodium sulfide, Na2S.
When solid ammonium nitrate is dissolved in water, it becomes completely dissociated and separates into the two ions, ammonium and nitrate. This forms a homogeneous solution, which is a mixture that has the same appearance and composition throughout. The reaction that takes place is shown below:
H₂O
NH₄NO₃₍s₎ --→ NH₄⁺ ₍aq₎ + NO₃⁻ ₍aq₎
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Answer:
Gravity
Explanation:
It can settle down and separate over time due to gravity.
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