ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 2

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IMPORTANT

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Nitrogen, oxygen and fluorine are the highly electronegative elements. When they are attached to a hydrogen atom to form a covalent bond, the electrons of the covalent bond are shifted towards the more electronegative atom. This partially positively charged hydrogen atom forms a bond with the other more electronegative atom. This bond is known as:

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Important Questions on Chemical Bonding and Molecular Structure

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 4

Choose the compounds containing ionic, covalent and coordinate bonds out of the following

{MgCl}_{2}, {CH}_{4}, CaO, HCl, {NH}_{4}^{+}

and

O_{3}

.

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 5

Calculate the bond order of

{He}_{2}^{+}

molecular ion.

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 6

Which of the two:

KCl

or

{Cl}_{2}

has higher boiling point and why?

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 7

Which of the following has maximum bond angle?

$H_{2} O, {CO}_{2}, {NH}_{3}$ and ${CH}_{4}$ .

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 8

Write the state of hybridisation of boron in

{BF}_{3}

.

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 9

Taking

z

-axis as the internuclear axis, explain why

2 p_{x}

or

2 p_{y}

orbital does not combine with

2 s

orbital to form molecular orbitals?

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 10

List two main conditions for forming hydrogen bonds.

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 4 - Chemical Bonding and Molecular Structure>Chapter Practice>Q 11

Which of the two: ice or water has lower density?