In which of the following ionic bond is formed between atoms of elements?
Correct answer: D. Na and H
- A. Al and Cl
- B. H and Cl
- C. B and F
- D. Na and H
Explanation
Sodium (Na) is a metal, and hydrogen (H) is a nonmetal. The electronegativity difference between Na and H is substantial. Sodium loses an electron to become Na+, and hydrogen gains an electron to become H-. The strong electrostatic attraction between the oppositely charged ions forms an ionic bond in compounds like sodium hydride (NaH).
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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