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Typically just one to acieve the noble gas configuration of krypton.

However as bromine is in period 4 its outermost shell is the fourth energy level so it is able to accept more electrons and can form compounds such as BrF5

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12y ago

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Related Questions

How many valence electrons must bromine gain or lose to get 8 valence electrons?

Bromine's atomic number is 35, so it has 7 valence electrons. To achieve 8 valence electrons and a full outer shell, bromine needs to gain one electron.


How much electrons would bromine have to gain or lose to get 8 valence electrons?

It'll have to gain one to have a stable octet.


How many valence electrons does bromine has to lose or gain to have 8 valence electrons?

Neutral Bromine has three complete rings of electrons. The first ring consists of 2 electrons, the second has 8, the third 18, and the fourth has a maximum capacity of 8 electrons. Bromine only has 7 electrons in it's outer ring, though, so it needs one extra electron to complete it's ring. So to answer your question, it needs ONE more valence electron.


How many number of electrons it must gain or lose to have eight valence electrons for bromine?

4


Does Br tend to gain or lose electrons?

Bromine (Br) tends to gain electrons. As a halogen, it has seven valence electrons and seeks to achieve a full octet by gaining one additional electron. This makes bromine more likely to form negative ions (anions) in chemical reactions.


How many valance electrons does bromine need to have a full valance shell?

it only needs 1 more valence electron. it has seven and wants eight like all ofthe other elements.


How will atoms with 5 valence electrons achieve a full set of valence electrons?

They will gain 3 electrons from something with 3 valence electrons.


How many valence electrons must sulfur gain to have a full valence?

it is in the oxygen family and has 6 valence electrons it requires 2 electrons


How many electrons does phosphrous have to gain or loose to have 8 valence?

Phosphorus, with 5 valence electrons, needs to gain 3 electrons to have a full set of 8 valence electrons. This would allow it to achieve a stable octet configuration, resembling the noble gas configuration of argon.


How many valence electrons does nitrogen need to be full?

Nitrogen has five valence electrons as a neutral atom, but it is shooting for eight. So it needs to gain three more electrons.


What are atoms valence electrons?

the electrons on their outer shell, all atoms want to gain a full valence shell.


How with 4 valence electron will achieve a full set of valence electron?

An atom with 4 valence electrons will have to either gain 4 electrons or lose 4 electrons to achieve a full set of eight electrons.