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Q1. Which of the following has the highest bond energy? (2023)
Solution:
C≡C (triple bond) has the highest bond energy due to the strong attraction between the two carbon atoms.
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Q2. What is the geometry of a molecule with four bonding pairs and no lone pairs around the central atom? (2023)
Solution:
The geometry is tetrahedral when there are four bonding pairs and no lone pairs around the central atom.
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Q3. What type of bond is formed when two atoms share electrons? (2023) 2023
Solution:
A covalent bond is formed when two atoms share electrons to achieve stability.
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Q4. What type of bond is present in O2? (2022)
Solution:
O2 has a double bond, as two pairs of electrons are shared between the two oxygen atoms.
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Q5. Which of the following elements is most likely to form an ionic bond with sodium? (2020)
Solution:
Chlorine is most likely to form an ionic bond with sodium as it readily accepts an electron to achieve a stable electron configuration.
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Q6. What type of bond is formed between sodium (Na) and chlorine (Cl) in NaCl? (2019)
Solution:
NaCl is formed by the transfer of an electron from sodium to chlorine, resulting in an ionic bond.
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Q7. Which of the following elements is most likely to form an ionic bond? (2023) 2023
Solution:
Sodium is most likely to form an ionic bond as it readily loses an electron to form Na+.
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Q8. What is the bond angle in a methane (CH4) molecule? (2023) 2023
Solution:
The bond angle in methane (CH4) is approximately 109.5 degrees due to its tetrahedral geometry.
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Q9. What is the geometry of a molecule with two bonding pairs and no lone pairs on the central atom? (2023)
Solution:
The geometry is linear when there are two bonding pairs and no lone pairs on the central atom.
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Q10. What is the geometry of a molecule with four bonding pairs and no lone pairs? (2023)
Solution:
A molecule with four bonding pairs and no lone pairs has a tetrahedral geometry.
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