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21 January, 22:52

Barium (Ba) has two valence electrons, and these electrons are located in the 6s subshell. Without using the periodic table, in which group and period is barium located?

Group 2A, Period 7

Group 1A, Period 6

Group 1A, Period 7

Group 2A, Period 6

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  1. 21 January, 23:13
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    Barium is located in Group 2A, Period 6
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