Consider an atom that has 9 electrons. how many electrons would be found in this atom's valence shell?

7 electrons

Explanation: In the first orbital shell it can only hold a maximum of 2 electrons.

The second orbital or energy level it can hold a minimum of 1 and maximum of 8 electrons.

Since the first shell has 2 electrons it means that the second shell has 7 electrons.

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

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