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What is the correct order of decreasing ...

What is the correct order of decreasing stability of the following cations?
`underset(I)(CH_(3)-overset(+)(C)H-CH_(3))" "underset(II)(CH_(3)-overset(+)(C)H-OCH_(3))`
`underset(III)(CH_(3)-overset(+)(C)H-CH_(2)-OCH_(3))`

A

`IIgtIgtIII`

B

`IIgtIIIgtI`

C

`IIIgtIgtII`

D

`IgtIIgtIII`

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The correct Answer is:
A
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The decreasing order of the stability of the ions : underset((I))(CH_(3)=overset(+)(C)H-CH_(3))" "underset((II))(CH_(3)-overset(+)(C)H-OCH_(3))" "underset((III))(CH_(3)-overset(+)(C)H-COCH_(3)^(-))

What is the correct order of decreasing stability of the following cations I. CH_(3) - overset(oplus)(C) H - CH_(3) II. CH_(3) - overset(oplus)(C)H - OCH_(3) III. CH_(3) - overset(oplus)(C)H - CH_(2) - OCH_(3)

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Write IUPAC names of the following compounds : CH_(3)-CH_(2)-underset(CH_(3))underset(|)(C)H-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C )- underset( CH_(3))underset(|)(C)H-CH-CH_(3)

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