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MCQ-26
Choose the true statement.
A. Along a period from left to right, atomic radius increases.
B. Along a period from left to right, ionization energy decreases.
C. Electronegativity of elements increases from right to left along a period.
D. None of the above

Answer: D

MCQ-27
Ammonia (NH₃) can bond with boron trifluoride (BF). For the bond formation, the electrons are most likely supplied by
A. Nitrogen
B. Boron
C. Hydrogen
D. Both boron and nitrogen because the bond formed is covalent

Answer: B

MCQ-28
The bond between carbon and oxygen in CO₂ is most likely:
A. an ionic bond
B. a covalent bond
C. a hydrogen bond
D. a dative bond

Answer: B

MCQ-29
Which of the following types of bonds has the least electronegativity difference between the bonding atoms?
A. Ionic bond
B. Polar covalent bond
C. Nonpolar covalent bond
D. Cannot be predicted

Answer: C

MCQ-30
Which of the following will have the highest bond energy?
A. A carbon-carbon bond in ethane
B. A carbon-carbon bond in ethene
C. A carbon-carbon bond in ethyne
D. A carbon-carbon bond in benzene

Answer: C