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Ch.8 - Periodic Properties of the Elements
All textbooksTro 4th EditionCh.8 - Periodic Properties of the ElementsProblem 51a,c,d
Chapter 8, Problem 51a,c,d

Determine the number of valence electrons in an atom of each element. a. Ba c. Ni d. S

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1
To determine the number of valence electrons, first identify the group number of the element in the periodic table.
For barium (Ba), locate it in Group 2 of the periodic table, which means it has 2 valence electrons.
For nickel (Ni), locate it in the transition metals section. Transition metals can have varying valence electrons, but typically, Ni has 2 valence electrons in its outermost shell.
For sulfur (S), locate it in Group 16 of the periodic table, which means it has 6 valence electrons.
Remember that the group number for main group elements (s and p blocks) often indicates the number of valence electrons.

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