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Which statement is incorrect regarding a chemical bond?

Correct answer: D. Bond formed by the large sized atoms is strong

  • A. Bond is formed by the overlapping of half-filled orbitals
  • B. Bond is formed by the attraction of positive and negative ions
  • C. Bond is formed by the overlapping of "s" orbital is strong
  • D. Bond formed by the large sized atoms is strong

Explanation

Bonding tends to take place between the outermost electrons of an atom (or outermost shell). As you increase the atomic size, the electrons that make up an atom begin to fill up higher electron orbitals. These orbitals, which then take place in bonding, are physically further away from the nucleus and thus experience less attraction to it (based on Columb's law). That is the reason why D is an incorrect statement and thus the answer. A is true as the overlapping of half-filled orbitals occurs in covalent bonding; a type of chemical bond. B is true as it occurs in the formation of ionic bonds. C is also true as the s orbital is the smallest orbital because of which the distance between outermost electrons and the positively charged nucleus is small, rendering a stronger attractive force.

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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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