September 2021 1 8 Report

поставьте знаки меньше(<) или больше(>),сравнив Ar и Mr пар химических элементов и молекул:
а)Na P
б)N Cl
в)H2SO4 H3PO4
г)PH3 NH3
д)Cu Zn
е)H O
ж)N2O5 P2O5

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