Multiple choice

Which of the following contains a co-ordinate covalent bond?

  1. HCl

  2. BaCl2<o:p></o:p>

  3. N2H5+<o:p></o:p>

  4. H2O<o:p></o:p>
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Co-ordinate covalent bond is formed by sharing one pair of electrons between the two atoms. In this pair, both electrons come from one atom and the remaining atom donates none. For this, one of the atoms should have at least one lone pair of electrons. The other atom should have an empty valance orbital.

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