Allah, subhanu wa ta'ala, mentions silver three times in surat AlInsan (76). The second time is in aya 16 which is the middle aya of the sura of 31 ayas. The word is the third word of five words in the aya; so it is the middle word of the aya. The word is word number 124 of 247 words in the sura.

I count conjugating waw as part of the word following it and count the basmalla words.