Respuesta :

Bismuth has 5 valence electrons
Boron has 3 valence electrons 
Barium has 2 valence electrons
Bromine has 7 valence electrons

So therefore, the correct answer would be Barium.

Answer:

The correct answer is barium.

Explanation:

Valence electrons are the electrons present in the valence shell of an atom of an element.

Bismuth has atomic number of 83.

[tex][Bi]=[Xe]6s^26p^3[/tex]

Number of valence electron = 5

Boron has atomic number of 5.

[tex][B]=[He]2s^22p^1[/tex]

Number of valence electron = 3

Barium has atomic number of 56.

[tex][Ba]=[Xe]6s^2[/tex]

Number of valence electron = 2

Bromine has atomic number of 35.

[tex][Br]=[Ar]4s^24p^5[/tex]

Number of valence electron = 7

Barium is one of the element in the given options which possesses fewest number of valence electrons

Otras preguntas