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Standard X
Chemistry
Covalent Bond
Question

Which is the best description of a covalent bond ?
  1. Electrons are simultaneously attracted by more than one nucleus.
  2. Filled orbitals of two or more atoms overlap one another.
  3. Oppositely charged ions attract one another.
  4. Unoccupied orbitals of two or more atoms overlap one another.

A
Filled orbitals of two or more atoms overlap one another.
B
Electrons are simultaneously attracted by more than one nucleus.
C
Oppositely charged ions attract one another.
D
Unoccupied orbitals of two or more atoms overlap one another.
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Solution
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The best description of a covalent bond is " Electrons are simultaneously attracted by more than one nucleus."
A covalent bond is formed when an orbital containing single electron of an atom overlaps with
an orbital containing single electron of another atom . Thus covalent bond involves sharing of electrons between two atoms.

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