Which of the groups highlighted in the periodic table belowcontains atoms with t

Question

Which of the groups highlighted in the periodic table belowcontains atoms with the following? The chart is 1 through 18, under 2 the second square downthrough the seventh square down is red, under 13 the second squaredown through the sixth is green, under 14 the second through sixthsquare down is blue, under 15 the second through sixth square downis pink, and under 16 the second through sixth square down ispurple. (a) 2 valence electrons     (b) 5 valenceelectrons          (c) 3 valence electrons ___ Group2                    ___ Group2                       ___ Group 2 ___ Group13                  ___ Group13                     ___ Group 13 ___ Group14                 ___ Group14                      ___ Group 14 ___ Group15                  ___Group15                      ___ Group 15 ___ Group16                 ___ Group16                       ___Group 16 Which of the groups highlighted in the periodic table belowcontains atoms with the following? The chart is 1 through 18, under 2 the second square downthrough the seventh square down is red, under 13 the second squaredown through the sixth is green, under 14 the second through sixthsquare down is blue, under 15 the second through sixth square downis pink, and under 16 the second through sixth square down ispurple. (a) 2 valence electrons     (b) 5 valenceelectrons          (c) 3 valence electrons ___ Group2                    ___ Group2                       ___ Group 2 ___ Group13                  ___ Group13                     ___ Group 13 ___ Group14                 ___ Group14                      ___ Group 14 ___ Group15                  ___Group15                      ___ Group 15 ___ Group16                 ___ Group16                       ___Group 16

Explanation / Answer

If by chart, you mean the periodic table, then atoms with 2 valenceelectrons are in Group 2. Atoms with 5 valence electrons arein Group 15. Atoms with 3 valence electrons are in Group13. If you look at the periodic table, you will see two tallcolumns on the left, ten short columns in the middle, and six tallcolumns on the right. Those short columns in the middle arecalled the transition metals and have their own rules fordetermining valence electrons. The remaining eight columnsare Groups 1, 2, 13, 14, 15, 16, 17, and 18 from left toright. When trying to find valence electrons, just look atthe group number. Atoms in group 1 have 1 valence electron,atoms in group 2 have 2 valence electrons, atoms in group 13 havethree valence electrons, atoms in group 14 have 4 valenceelectrons, atoms in group 15 have five valence electrons, atoms ingroup 16 have 6 valence electrons, atoms in group 17 have 7 valenceelectrons, and atoms in group 18 have 8 valence electrons. Hope this helps.

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