Chemistry
Chemical Bonding and Molecular Structure
1,277 Questions
This section tests your knowledge of chemical bonding, molecular structure, and hybridization. It covers ionic and covalent bonds, octet rule exceptions, and molecular geometry. These chemistry questions are common in various competitive entrance examinations.
Ionic and covalent bondsHybridisation of elementsOctet rule exceptionsMolecular geometryIntermolecular forces
Chemical Bonding and Molecular Structure Questions
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completely destroyed
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completely transferred
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divided
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shared equally
B
Correct answer
Explanation
Ionic bond is formed when electrons are completely transferred.
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between metals and non-metals
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between metals only
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between non-metals only
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none of these
A
Correct answer
Explanation
Ionic bonds are formed betwen metals and non-metals.
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ion
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non-polar molecule
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polar molecule
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cation
B
Correct answer
Explanation
Molecule that doesn't have oppositely charged ends is non-polar molecule.
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polyatomic ion
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negative ion
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molecule
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crystal
A
Correct answer
Explanation
Group of atom acting as one charged atom is polyatomic ion.
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ionic bond
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covalent bond
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double bond
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both a and b
A
Correct answer
Explanation
Sodium chloride forms ionic-bond.
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Atoms bond together to fill their valence shells.
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Chemical bond is formed when electrons of an atom interact with each other.
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Chemical bond is formed when protons of an atom interact with each other.
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None of these
A
Correct answer
Explanation
According to gilbert lewis theory, atoms bond to fill their valence shells.
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crystalline solids with high temperatures
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amorphous solids
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amorphous solids with high temperatures
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crystalline solids
A
Correct answer
Explanation
ionic compounds tend to form crystalline solids with high temperature
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Fluorine
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Oxygen
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Krypton
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Lithium
C
Correct answer
Explanation
Krypton has a complete octet of electrons as it is a noble gas.
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Na and Cl
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Mg and F
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Li and F
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Na and F
B
Correct answer
Explanation
The pair Mg and F will form the most stable ionic bond.
B
Correct answer
Explanation
Carbon needs 4 electrons to complete its octet and X needs one electron to complete its octet. So, C can share an electron pair with four atoms of X to form a stable saturated molecule.
C
Correct answer
Explanation
Among the given compounds H is covalent bonded in case of SiH4.
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Sodium hydroxide
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Sodium chloride
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Carbon dioxide
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Water
A
Correct answer
Explanation
Sodium hydroxide is a compound which possesses molecules having both covalent and ionic bonds.
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A and D
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B and C
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A and C
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B and D
D
Correct answer
Explanation
The two elements which can react to form ionic bonds (or ionic compounds) are B and D.
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the ionisation energy of A is high and the electron affinity of B is low
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the ionisation energy of A is low and the electron affinity of B is high
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the ionisation energy of A and the electron affinity of B is high
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the ionisation energy of A and the electron affinity of B is low
B
Correct answer
Explanation
An ionic bond A+ B– is most likely to be formed when the ionisation energy of A is low and the electron affinity of B is high.
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Difference in their boiling points
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Solubility
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Conductivity
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None of these
C
Correct answer
Explanation
Conductivity is the best test to distinguish between ionic compounds and covalent compounds. Ionic compounds conduct electrivcity but covalent compounds do not conduct electricity.