Chemistry

Chemistry, 08.10.2019 01:20, juliann9160

Which selection contains elements that are not all in the same group?

sodium, potassium, rubidium

fluorine, chlorine, bromine

argon, krypton, xenon

iron, copper, calcium

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Chemistry, 30.10.2019 06:31, pookie1971

Mendeleev’s principle of chemical periodicity states that when the elements are arranged according to their atomic numbers. this periodic law allows elements with similar properties to appear at regular intervals. predict the group of elements and their number of valence electrons that will combine in a 2: 1 ratio to with sodium. a. bromine, chlorine, iodine, 7 b. sulfur, selenium, polonium, 6 eliminate c. hydrogen, fluorine, potassium, 1 d. calcium, phosphorus, tellurium, 2

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Which selection contains elements that are not all in the same group?

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