Half-page written about the final placement in Bond U, for one? (8,7)

I believe the answer is:

chemical element

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'half-page written about the final placement' is the definition.
I can't judge whether this defines the answer.

'bond u for one?' is the wordplay.
'bond' becomes 'chemical' (synonyms).
'u for one?' becomes 'element' (u is a kind of element).
'chemical'+'element'='CHEMICAL ELEMENT'

'in' acts as a link.

Can you help me to learn more?

(Another definition for chemical element that I've seen is " Pa perhaps".)

I've seen this clue in the Sydney Morning Herald.

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