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9 Nov 2018
4) The dianion of an unknown element contains 54 electrons and 75 neutrons. Fill in the blanks below. a) The atomic number of the compound is b) Its atomic symbol is c) The Z of the compound is
4) The dianion of an unknown element contains 54 electrons and 75 neutrons. Fill in the blanks below. a) The atomic number of the compound is b) Its atomic symbol is c) The Z of the compound is
Jean KeelingLv2
11 Nov 2018