4^(@) hydrogen is not possible, give reasons…..

1.	4^(@) hydrogen is not possible, give reasons…..
Answer» CARBON has FOUR covalent bond. Centre carbon is attach with other four carbon and so there is no valence for attachement of HYDROGEN `1^(@), 2^(@)` and `3^(@)` carbon are stable but `4^(@)` carbon is unstable. Free RADICAL is formed with `4^(@)` carbon. Solution :Centre carbon is attach with other four carbon and so there is no valence for attachement of hydrogen

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