Answer:
B. Valence Electron Pairs
Explanation:
Valence-shell electron-pair repulsion, or VSEPR, describes the shape of molecules by determining the repulsion of valence electrons. Therefore, our answer is B.
propane
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15 gram
in one liter
=1000ml = 1000 cm3
so 15 ml = 15 cm3
15 cm3 = 15 gram
Equation 2, because K being more reactive, exchanges position with Pb in PbNO3.