Group in most natural surroundings (7)

I believe the answer is:

element

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'surroundings' is the definition.
(element is a kind of surroundings)

I don't understand the remainder of the clue.

(Other definitions for element that I've seen before include "part of a toaster" , "lead, for example" , "One of the periodic table" , "Chemical building-block" , "briefly identified by Al or Mo, among others" .)

I've seen this clue in The Telegraph and The Sun.

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