The best and most correct answer among the choices provided by your question is the first choice or letter A.
A ph of 7 contains only water.
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The formula of butane is C4H10 but I don't how many atoms it contains though
<span>Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase. Deposition: the substance changes directly from a gas to a solid without going through the liquid phase.</span>
N=
l=
m(l)=
m(s)=
start with H^+ (no electrons) , then adding 5 electrons will be 1s2 2s2 2p1
so for the 5th electron
n = 2
l = 1
ml = -1
ms = 1/2
