Periodik tablisada nechta element bar., 60, 63, 105, 118, wodrod nechinji element, 1, 2, 3, 4, Magning nisbiy massasi nechaga teng, 23, 24, 28, 29, Uglerod nechinji gruppada joylashgan, I, II, III, IV, Davriy jadvalda nechta gatar bor, 7, 8, 10, 11, rasimdagi qanday asbob, Menzurka, varomka, probirka, stakan

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