guerrero25 wrote:
It takes the heat of large stars or supernovae to cause the fusion of magnesium with hydrogen, creating a chemically stable aluminum. Since aluminum is one of the most abundant elements on Earth, it can be inferred that, at least at some point, the temperature inside or outside Earth was comparable to that on large stars or supernovae.
Which of the following, if true, causes most damage to the conclusion of the argument above?
(A)Creation of stable aluminum requires distinct pressure conditions not typical of contemporary Earth.
(B)Some of the aluminum found on Earth was brought here with asteroids or other cosmic bodies that were parts of large stars or supernovae.
(C)Most aluminum on Earth comes in oxides, and native aluminum can be found only in low oxygen environments.
(D)Aluminum found on Earth has several vacant electrons that have to be artificially removed in order for it to become chemically stable.
(E)Magnesium itself can only be formed under strictly defined conditions.
IMO (D)
(A)Creation of stable aluminum requires distinct pressure conditions not typical of contemporary Earth.
Out of scope(B)Some of the aluminum found on Earth was brought here with asteroids or other cosmic bodies that were parts of large stars or supernovae.
(C)Most aluminum on Earth comes in oxides, and native aluminum can be found only in low oxygen environments.-Out of scope
(D)Aluminum found on Earth has several vacant electrons that have to be artificially removed in order for it to become chemically stable.
(E)Magnesium itself can only be formed under strictly defined conditions.-
Out of scopeDown to (B) and (D)
"Since aluminum is one of the most abundant elements on Earth"-Even if some of the aluminium was bought by asteroids or other cosmic bodies that were parts of large stars or supernovae- what about the major part of it.??
Now analyzing (D)
we have to weaken that temperature on earth was almost the same as that of stars or supernova...means if thats the case the aluminium found on Earth should not be chemically stable.. (D) clearly says that...