Which of the following compound has maximum "C-C" single bond length ?

Which of the following molecule has maximum (C-C) bond length?

Which of the following molecule has maximum (C-C) bond length?

Which of the following compounds has weakest C-X bonds?

Which of the following compound has highest value of bond length-

Which of the following compound have larger C-O bond length than C-O bond length of H_(3)-overset(O)overset(||)(C)-CH_(3) ?

Which of the following has maximum C-O bond length ?

Which of the following has minimum C-H bond length

Which of the following compounds show C-C bond length in between those single and double bond?