객관식
In a double covalent bond between two atoms, how many electrons are shared?
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객관식
Which of the following pairs of atoms forms the most polar bond?
A
H and F
B
N and O
C
C and H
D
O and S
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검증된 단계별 안내1
Understand that bond polarity depends on the difference in electronegativity between the two atoms forming the bond. The greater the difference, the more polar the bond.
Recall the approximate electronegativity values for the atoms involved: H (2.1), F (4.0), N (3.0), O (3.5), C (2.5), and S (2.5).
Calculate the electronegativity difference for each pair: For H-F, it is |4.0 - 2.1|; for N-O, |3.5 - 3.0|; for C-H, |2.5 - 2.1|; and for O-S, |3.5 - 2.5|.
Compare these differences to determine which pair has the largest electronegativity difference, indicating the most polar bond.
Conclude that the pair with the highest electronegativity difference forms the most polar bond.
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