Kimyoda nechta element bor, 118, 98, 63, 22, davriy sistemani kim kashf etgan, Lamonosov, Mendeleyev, dalton, berselus, nechta metall bor, 96, 22, 63, 65, nechta davr bor, 8, 7, 11, 10, nechta guruh bor, 11, 7, 8, 10, bu qanday idish, shtativ, probirka, shisha stakan, kolba.

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