Among the following species which two have a trigonal pyramidal shape?
(I) $N I_{3}$ (II) $I_{3}^{-}$
(III) $S O_{3}^{2 -}$ (IV) $N O_{3}^{-}$

I

and

I I I

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I I I

and

I V

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I

and

I V

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I I

and

I I I

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Solution

The correct option is C $I$ and $I I I$
Trigonal pyramidal is a molecular shape that results when there are three bonds and one lone pair on the central atom in the molecule.
Here $N I_{3}$ and $S O_{3}^{- 2}$ has $3$ bond pairs and one lone pair.

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Similar questions

Q. Which of the following two species have the same shape?
(I)

N I_{3}

(II)

{I_{3}}^{-}

(III)

{S O_{3}}^{2 -}

(IV)

{N O_{3}}^{-}

Question 10
Which among the following have scales?

(i) Amphibians
(ii) Pisces
(iii) Reptiles
(iv) Mammals

(a) (i) and (iii)
(b) (iii) and (iv)
(c) (ii) and (iii)
(d) (i) and (ii)

Q. Question 10
Which among the following have scales?

(i) Amphibians
(ii) Pisces
(iii) Reptiles
(iv) Mammals

(a) (i) and (iii)
(b) (iii) and (iv)
(c) (ii) and (iii)
(d) (i) and (ii)

Q. Question 6
Which among the following has open circulatory system?

(i) Arthropoda
(ii) Mollusca
(iii) Annelida
(iv) Coelenterata

(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iii)
(d) (ii) and (iv)

In which of the following molecules carbon atom marked with asterisk (*) is asymmetric?

(a) (i), (ii), (iii) and (iv) (b) (i) ,(ii) and (iii)

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Among the following species which two have a trigonal pyramidal shape?(I) NI3 (II) I−3(III) SO2−3 (IV) NO−3

The correct option is C I and IIITrigonal pyramidal is a molecular shape that results when there are three bonds and one lone pair on the central atom in the molecule.Here NI3 and SO−23 has 3 bond pairs and one lone pair.

Among the following species which two have a trigonal pyramidal shape?
(I) $N I_{3}$ (II) $I_{3}^{-}$
(III) $S O_{3}^{2 -}$ (IV) $N O_{3}^{-}$

The correct option is C $I$ and $I I I$
Trigonal pyramidal is a molecular shape that results when there are three bonds and one lone pair on the central atom in the molecule.
Here $N I_{3}$ and $S O_{3}^{- 2}$ has $3$ bond pairs and one lone pair.