Answers: 3
The number of valence electrons of this element is 7.
The number of valence electrons of this element is 8.
The number of valence electrons of this element is 5.
The number of valence electrons of this element is 1.![[Ar]4s^23d^{10}4p^5](/tpl/images/0444/6289/d71de.png)
The number of valence electrons of this element is 7.
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