Trying to find the right answer to this..

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Chemical Bonding and Molecular Structure

Short Answer Type

241.

Give the reason for the following: Bond order in N₂ is 3 whereas it is 2.5 in NO ?

223 Views

Long Answer Type

242.

Give the points of resemblance and points of difference between valence bond theory and molecular orbtial theory.

120 Views

243.

What is hydrogen bond? How is it formed?

137 Views

Short Answer Type

244.
What are the conditions for hydrogen bonding ?

These are:

(i) Hydrogen atom should be bonded to highly electronegative atom (N, O, F). The strength of the hydrogen bond increases with an increase in the electronegativity of the other atom. For example, the electronegativity of N, O, F increases as N<OTherefore, the strength of hydrogen bond also increases as N – H ... N < O – H...O < F - H ... F.

(ii) The size of the electronegative atom should be small. Smaller the size of the atom, more the electrostatic force of attraction, stronger will be the hydrogen bond.

126 Views