Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

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Earn 100

What is covalency?

Important Questions on Chemical Bonding and Molecular Structure

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Nitrogen shows maximum covalency of

4

where as other heavier elements of the group show higher covalency because.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

What is the nature of the bond between

B

and

O

in

{(C_{2} H_{5})}_{2} {OBH}_{3} ?

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Which of the following compounds contain(s) no covalent bond(s)?

KCl, {PH}_{3}, O_{2}, B_{2} H_{6}, H_{2} {SO}_{4}

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The symbol for carbonate ion is

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The formula of compound represents

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The covalency of elements explains about a number of _____ formed by the atom.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The formation of ammonium ion takes place through _____ (coordinate/ ionic) bond formation.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Some compounds along with their chemical formulae are given below.

Compounds	Chemical Formulae
Magnesium nitrate	$Mg ({NO}_{3})_{2}$
Aluminium nitride	$AlN$
Zinc phosphate	${Zn}_{3} ({PO}_{4})_{2}$
Calcium oxide	$CaO$

On the basis of formulae given above, the valencies or charges on ions are given below. Select the incorrect option.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

{Cl}^{-}, F^{-}, {CO}_{3}^{- 2}

and

{SO}_{4}^{2 -}

are _____ radicals. (acidic / basic)

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The _____ compounds generally have low melting and boiling points.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The Xenon difluoride can act as _____.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The chemical formula of sodium chlorate is

{NaClO}_{3}

then the chemical formula of sodium hypochlorite is

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Limestone is _____.

(A) ${CaCO}_{3}$ (B) $CaO$ (C) $Ca {(OH)}_{2}$

Enter your correct answer as A, B or C.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The valency of iron in

{Fe}_{2} O_{3}

is

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

For the formation of a covalent bond, both atoms should have _____ ionisation energy.(high/low)

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The formula of washing soda is _____.

(A) ${Na}_{2} {CO}_{3} . 10 H_{2} O$ (B) ${Na}_{2} {CO}_{3}$ (C) ${Na}_{2} {CO}_{3} . 2 H_{2} O$

Enter your correct answer as A, B or C.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Point out the correct statements

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

The correct statement(s) regarding,

(i)

H C l O

(ii)

H C l O_{2}

(iii)

H C l O_{3}

and

(iv)

H C l O_{4}

is are

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

In _____ bonding, the valence electrons are shared among all the atoms of the metallic elements.

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Methane has _____ tetrahedron structure. (irregular/regular)