In which of the following Compounds does the central atom obey the octet rule ?

(a)

XeF₄

(b)

AlCl₃

(c)

SF₆

(d)

SCl₂

Which of the following is electron deficient ?

(a)

PH₃

(b)

(CH₃)₂

(c)

BH₃

(d)

NH₃

Which one of the following is the likely bond angles of sulphur tetrafluoride molecule ?

(a)

120^o,80^o

(b)

109^o,28

(c)

90^o

(d)

89^o,117^o

The correct order of O-O bond length in hydrogen peroxide, ozone and oxygen is _______

(a)

H₂O₂ > O₃ >O₂

(b)

O₂ > O₃ > H₂O₂

(c)

O₂ > H₂O₂ > O₃

(d)

O₃ > O₂ > H₂O₂

Xe F₂ is isostructural with _____________

(a)

SbCl₂

(b)

BaCl₂

(c)

TeF₂

(d)

ICI₂^-

Non- Zero dipole moment is shown by __________

(a)

CO₂

(b)

p-dichlorobenzene

(c)

carbontetrachloride

(d)

water

The complete transfer of one/or more valence electron from one atom to another leads to the formation of______

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Ionic bond

The unit of dipole moment is________

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Coulomb^-l m²

The number of lone pair of electrons on C-atom present in CO₂ are _________

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4

Number of chlorine atoms which form equatorial bonds in PCI₅ molecule are/is _________

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.3

Bond order of O₂, F₂, N2 respectively are________

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2,1,3

CH₄

(1)

1.43Å

Gold

(2)

O₃

C-N

(3)

Metallic bond

BF₃

(4)

120°

Bent

(5)

Covalent bond

(a) NaCI
(b) CO₂
(c) LiF
(d) MgO

(a) H₂
(b) O₂
(c) Cl₂
(d) F₂

What is a pi bond ?

Explain Sp² hybridisation in BF₃.

What is dipole moment ?

Define bond energy.

Explain resonance with reference to carbonate ion ?

Explain the covalent character in ionic bond.

What are the number of bond pairs and lone pairs of electrons on N-atom in N\({ O }_{ 3}^{ - }\) ?

Define co-ordinate covalent bond.

Bond angle in PH⁺₄ is higher than in PH_3. Why ?

Explain the various steps to draw the lewis structure of Nitirc acid.

What do you mean by metallic bond ?