Chemistry, 21.08.2019 05:10 tjacqueline9753

Elements of modern periodic table are arrang in 2a elements are called and group 7a element table are respectively, a. atomic number /alkaline earth metals/noble gases b. atomic number /alkali metals / alkaline earth metals atomic number /alkaline earth metals/ and halogens d. atomic mass /alkali metals/noble gases c.

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Elements of modern periodic table are arrang in 2a elements are called and group 7a element table...