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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
A coordinate bond is formed when an atom in a molecule has
  • A
    Electric charge on it
  • B
    All its valency electrons shared
  • C
    A single unshared electron
  • ✓
    One or more unshared electron pair
✓

Answer

Correct option: D.
One or more unshared electron pair
d
A co-ordinate or dative bond is a covalent bond(a shared pair of electrons) in which both the electrons come from the same atom. It is shown by an arrow and the arrow points from atom donating the lone pair to accepting atom.

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