Q10 of 68 Page 39

In which of the following molecule/ion all the bonds are not equal?

C₂H₄ has one double bond and four single bonds. The bond length of double bond (C = C) is smaller than single bond (C – H).

The other compounds have single bonds only that have same bond length.

Number of π bonds and σ bonds in the following structure is–

Which molecule/ion out of the following does not contain unpaired electrons?

In which of the following substances will hydrogen bond be strongest?

If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d² 4s², the four electrons involved in chemical bond formation will be_____.