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The element bromine has 35 protons in its nucleus, and therefore in its electrically neutral state it also has 35 electrons. Two electrons fit in the innermost shell, eight fit in the next shell, eighteen fit in the next shell, which takes the total up to 28. If we subtract 28 from 35 we get seven, voila.

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Q: Why does bromine have 7 valence electrons?
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Related questions

What is the valance of bromine?

The valency for bromine is -1. it has 7 valence electrons

How many number of valence electrons in bromine?

Counting the 4th shell orbitals and their electrons, Bromine has two 4s electrons and five 4p electrons, giving it a total of 7 valence electrons.

What is similar with bromine and the rest of the halogens?

They have 7 valence electrons

How many core electrons are in bromine?

2,8,18,7... 28 core electrons 7 valence electrons.

How many valence electrons are present in an atom of bromine in the ground state?

5 valence electrons exist in bromine period, at ground state bromine has 3 valence electrons

What element has 7 electrons on the fourth level?

Bromine, Br, [Ar] 3d10 4s2 4p5

Which p-block has 7 valence electrons C O CL AL?

Fluorine, chlorine, bromine, iodine, and astatine have 7 valence electrons.

Does selenium and bromine have the same number of valence electrons?

No, Selenium has 6 valence electrons while Bromine has 7. You can determine this because on the periodic table, Selenium is in Group VI while Bromine is in group VII.

Does fluorine share more characteristics with bromine or neon How can you tell?

Fluorine and bromine have 7 valence electrons and hence their properties are similar. Neon has 8 valence electrons and the properties are different from that of fluorine.

How many valence electrons dose a bromine anion contain?

The anion form of bromine, bromide, has eight valence electrons. Bromine normally has seven valence electrons, but gains to to form bromide.

Why bromine has only 7 valence electrons?

The maximum is 8 for noble gases.

How many electrons on their outer shell does bromine have?

Seven , outer shell electrons or valence electrons increase as you move from left to right on the periodic table not including the transition metals which vary, they start with 1 valence in the alkali earth metals , and finish with 8 valence electrons on the noble gasses (group 18)