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AVSEPR

AVSEPR

Trending Questions

Q. In which of the following molecules are all the bonds not equal?

$A l F_{3}$
$N F_{3}$
$C l F_{3}$
$B F_{3}$

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Q.

In which of the following species $pπ - dπ$ bond is present but $pπ - pπ$ bond is absent

${SiH}_{4}$
${CS}_{2}$
${SO}_{2}$
${SO}_{2} {Cl}_{2}$

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Q. The nature of

π

- bond in perchlorate ion is-

O (dπ)- Cl (pπ)
O (pπ) -Cl (dπ)
O (dπ)- Cl (dπ)
O (dπ) - Cl (dπ)

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Q.

Name the type of isomerism when ambidentate ligands are attached to central metal ion. Give two examples of ambidentate ligands.

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Q. A tin chloride Q undergoes the following reactions (not balanced).

Q + C l^{-} ⟶ X Q + M e_{3} N ⟶ Y Q + C u C l_{2} ⟶ Z + C u C l

X

is a monoanion having pyramidal geometry. Both Y and Z are neutral compounds. Choose the correct option(s).

The central atom Z has only one lone pair
The central atom in X is $s p^{3}$ hybridized
There is a coordinate bond in Y
The oxidation state of the central atom in Z is +2

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Q.

Question 44

Explain why $C O_{3}^{2 -}$ ion cannot be represented by a single Lewis structure. How can it be best represented?

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Q. Which of the following is the shape of

X e F_{2}

?

Linear
Trigonal bipyramidal
See-saw shaped
T-shaped

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Q. Which of the following has a

S - S

linkage ?

$S O_{4}^{2 -}$
$S_{2} O_{8}^{2 -}$
$S_{2} O_{5}^{2 -}$
$S_{2} O_{7}^{2 -}$

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Q.

3 c - 2 e^{-}

bonds are present is which of these molecules?

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Q. In which of the following molecules are all bonds not equal ?

$C l F_{3}$
$A l F_{3}$
$B F_{3}$
$N F_{3}$

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Q. Discuss the shape of the following molecule using VSEPR model:

A s F_{5}

and

{P H}_{3}

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Q. A tin chloride Q undergoes the following reactions (not balanced).

Q + C l^{-} ⟶ X Q + M e_{3} N ⟶ Y Q + C u C l_{2} ⟶ Z + C u C l

X

is a monoanion having pyramidal geometry. Both Y and Z are neutral compounds. Choose the correct option(s).

The central atom Z has only one lone pair
The central atom in X is $s p^{3}$ hybridized
There is a coordinate bond in Y
The oxidation state of the central atom in Z is +2

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Q. How many nodal planes are present in

π 2 p_{y}

bonding molecular orbital?

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Q.

d s p^{2}

hybridisation is in :

$[N i (C N)_{4}]^{2 -}$
both (a) and (b)
$[P t (e n)_{2}]^{2 +}$
None of these

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Q.

Name the type of isomerism when ambidentate ligands are attached to central metal ion. Give two examples of ambidentate ligands.

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Q. If true enter 1, else enter 0.
The hybridized orbitals always form

σ

-bonds.

1

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Q.

I	II
$O C l_{2}$	$O F_{2}$

The bond angle is greater in

O C l_{2}

than in

O F_{2}

because there is some

π

interactions in

O C l_{2}

involving donation from the filled p-orbitals on oxygen into the empty d-orbitals on chlorine No

π

-bonding is possible for

O F_{2}

because all orbitals are filled on both atoms.
If true enter 1, else enter 0.

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Q. In which of the following molecules/ions are all the bonds not equal?

$S F_{4}$
$S i F_{4}$
$X e F_{4}$
$B F_{4}^{-}$

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Q. The number of nodal plane is present in σ (s and p) bonding molecular orbital is_____

0

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Q. Which of the following molecule is planer?

$N C l_{3}$
$A l C l_{3}$ (dimer)
$S n C l_{4}$
$C H_{2} = C H_{2}$

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Q. An electrochemical cell is set up as

P t, H_{2} (1 a t m) | H C l (0.1 M) | | {C H}_{3} C O O H (0.1 M) | H_{2} (1 a t m), P t

The emf of the cell is not zero because:

the two acids are different
the $p H$ values are different for the two acid
the molarities are same
it is a concentration cell

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Q.

2 K_{2} C r_{2} O_{7} + 8 H_{2} S O_{4} \to 2 K_{2} S O_{4} + 2 C r_{2} (S O_{4})_{3} + 8 H_{2} O + 3 O_{2}

Is the above reaction correct?

True
False

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Q. Identify the balanced chemical reaction between

P b^{2 +}

and

N H_{4} O H

:

$P b {({N O}_{3})}_{2} + {3 N H}_{4} O H \to {2 N H}_{4} {N O}_{3} + P b {(O H)}_{2}$
$2 P b {({N O}_{3})}_{2} + {2 N H}_{4} O H \to {2 N H}_{4} {N O}_{3} + 2 P b {(O H)}_{2}$
$P b {({N O}_{3})}_{2} + {N H}_{4} O H \to {N H}_{4} {N O}_{3} + P b {(O H)}_{2}$
$P b {({N O}_{3})}_{2} + {2 N H}_{4} O H \to {2 N H}_{4} {N O}_{3} + P b {(O H)}_{2}$

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Q. Statement 1 : Iron is an element.

Statement 2 : It cannot be broken into smaller units and retain its physical and chemical properties.

Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1
Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1
Statement 1 is correct but Statement 2 is not correct
Statement 1 is not correct but Statement 2 is correct
Both the Statement 1 and Statement 2 are not correct

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Q. Which among the following species has unequal bond lengths?

$X e F_{4}$
$S i F_{4}$
$B F_{4}^{-}$
$S F_{4}$

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Q. Which of the following pairs of ions are isoelectronic and isostructural?

$S O_{3}^{2 -}, N O_{3}^{-}$
$C l O_{3}^{-}, C O_{3}^{2 -}$
$C O_{3}^{2 -}, N O_{3}^{-}$
$C l O_{3}^{-}, S O_{3}^{2 -}$

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Q. The number of right angled bonds in

{B r F}_{5}

is:

Six
Eight
Zero
Four

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Q. Which types of bonds are present between two carbon atoms in an acetylene molecule?

Two sigma bonds and one pi bond
Three pi bonds
One sigma bond and two pi bonds
Three sigma bonds

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Q. Which of the following molecules is/are linear?

$I F_{2}^{+}$
$I {C l}_{2}^{-}$
$O F_{2}$
$C d B r_{2}$

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Q. Find the number of P-O bonds of identical length in hypophosphate ion.

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