Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 48

HARD

NEET

IMPORTANT

Earn 100

Which one of the following has the same number of lone pair(s) around the central atom?

$a$ . ${XeF}_{5}^{-}$

$b$ . ${XeF}_{4}$

$c$ . ${ICl}_{3}$

$d$ . ${NH}_{2}^{-}$

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Important Questions on Chemical Bonding and Molecular Structure

EASY

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 49

In which of the following, the central atom does not have

75 %

p -

character in its hybrid orbitals?

MEDIUM

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 50

In

{XeOF}_{4}

, let

x

be the total number of bond pairs around

Xe

,

y

be the total number of lone pairs on all atoms and

z

be the total number of

90^{°} OXeF

angles, then,

x + y + z

is:

MEDIUM

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 51

Which of the following has the maximum

C - H

bond distance?

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NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 52

In the structure of ${ClF}_{3}$ , the number of significant repulsions is

(If $lp - lp = x, lp - bp = y, bp - bp = z,$ then $x + y + z = ?$ ):

EASY

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 53

The bond energies for single covalent bonds of hydrogen atoms with elements

A, B, C

and

D

are

140, 228, 325

and

190 kJ {mol}^{- 1}

, respectively. The element which has the smallest atom is:

EASY

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 54

Which is the largest bond angle around central oxygen atom?

MEDIUM

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 55

A molecule

{AB}_{4}

is isostructural with non-polar

{CH}_{4}

. The bond moment of

A - B

is

1.2 D

and bond length is

1 \overset{\circ}{A}

. The charge developed on the central atom of

{AB}_{4}

(neglecting any orbital dipoles), is:

HARD

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 13 - Chemical Bonding and Molecular Structure>Level 3>Q 56

Two compounds given are,

{PX}_{2} Y_{3}

and

{PX}_{3} Y_{2}

(where,

P =

Phosphorous atom,

X

and

Y

are monovalent atoms). If all

' X'

atoms are replaced by

' Z'

atoms (

Z

is a monovalent) and electronegativity order for the three atoms is

X > Y > Z

, then, the dipole moment of the product obtained after displacing

X

by

Z

will be: