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Linear structure is assumed by: (I) NC...

Linear structure is assumed by:
(I) `NCO^(-)` (II)`CS_(2)` (III)`overset(+)(N)O_(2)` (IV)Solid `BeH_(2)`

A

all four

B

(II), (III) and (IV)

C

(I), (II) and (III)

D

(II) and (III)

Text Solution

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The correct Answer is:
C
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Label the structure indicated by (i), (ii), (iii) and (iv)-

Among the following structures I to IV , it is true that: (I) C_(2)H_(5)-overset(CH_(3))overset(|)CH-C_(3)H_(7), (II) CH_(3)-overset(O)overset(||)C-overset(CH_(3))overset(|)CH-C_(2)H_(5) (III) H-overset(H)overset(|)underset(H)underset(|)C^(+), (IV) C_(2)H_(5)-overset(CH_(3))overset(|)CH-C_(2)H_(5)

The correct stability order of the following resonance structures is (I)H_(2)C = overset(+)N = overset(-)N" "(II)H_(2)overset(+)C - N = overset(-)N (III)H_(2)overset(-)C - overset(+)N = N" "(IV)H_(2)overset(-)C - N = overset(+)N

The correct order of stabilities of the following resonance structures is : (I) H_2 C = overset (oplus) N = overset (Ө) N (II) H_2 overset (oplus) C - N = overset (Ө) N (III) H_2 overset (Ө) C - overset (oplus) N -= N (IV) H_2 overset (Ө) C - N = overset (oplus) N .

The decreasing order of the rate of bromination of the following compounds is: I. PhN^(o+)Me_(3) , II. PhCH_(2) overset(N)Me_(3) III. PhMe , IV. PhMe_(2)

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