Alkanes are less reactive as compared to alkenes because:
Correct answer: A. Electrons are tightly held by sigma bond in alkanes, thus less reactive
- A. Electrons are tightly held by sigma bond in alkanes, thus less reactive
- B. Electrons cloud away from nuclei due to pi bond in alkenes, thus more reactive
- C. Pi bonds make alkenes reactive to electrophilic reagents
- D. All of the above
Explanation
Alkanes are less reactive compared to alkenes primarily because of the nature of the bonds present in their molecular structure. Alkanes consist of only single covalent bonds (sigma bonds) between carbon and hydrogen atoms. These sigma bonds are relatively strong, and the electrons are tightly held between the nuclei of the bonded atoms. As a result, there is limited electron density available for interaction with other molecules, making alkanes less reactive.
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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