I.U.P.A.C QUESTION GIVEN BELOW?

Question

The correct I.U.P.A.C name of CH₃CH₂CH₂CH₃ is

(a)n-Butane        (b) Butane

(c) both (a) & (b)  (d) Not appropriate

THINK AND THEN ANSWER..

Answer 1

Correct answer is both (b) i.e butane

Comments

Sorry but the answer is only butane bcz he gives reason like this
    "The prefix n is not part of the iupac system, hence the correct name is butane, n-butane is it's common name"
But I think this is wrong bcz all book used this

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ohh, great thanks