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Which of the following elements possesses the fewest valence electrons? bismuth boron barium bromine

2 Answers

7 votes
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.
User Spec
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5 votes

Answer:

The correct answer is barium.

Step-by-step explanation:

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

Bismuth has atomic number of 83.


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

Number of valence electron = 5

Boron has atomic number of 5.


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

Number of valence electron = 3

Barium has atomic number of 56.


[Ba]=[Xe]6s^2

Number of valence electron = 2

Bromine has atomic number of 35.


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

Number of valence electron = 7

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

User Brandon Pelfrey
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7.6k points
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