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Q: What is the number of electrons a phosphorus atom must gain or lose to have 8 valence electrons and what is the resulting ion charge?
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How many electrons are in a phosphorus Ion's outermost energy level?

Phosphorus forms P3- ion and it has 8 valence electrons (5 valence electrons from phosphorus and three from the charge).


What charge is the element phosphorus?

It has a negative charge; to be more specific it has a charge of -3, since it has only 5 valence electrons and it would like to gain 3 more to be stable at 8.


What is the charge of valence electrons of calcium?

Yes, calcium has valence electrons - two, in fact (it is a divalent chemical element).


How may electrons does a phosphide ion have?

Most probably 10 electrons as a phosphide ion with 3-charge has 8 valence electrons.


How does an atom keep its charge?

An atom's charge changes when it gains or loses electrons. Atoms naturally tend to lose or gain electrons to level out at eight valence electrons (valence electrons are electrons in the outermost energy level), so the only atoms that keep their charge are ions with eight valence electrons or the Noble Gases, atoms on the far right of the periodic table that have eigth valence electrons and a nuetral charge.


What is formal charge?

Formal charge is used when creating the Lewis structure of a molecule, to determine the charge of a covalent bond. Formal charge is the difference between the valence electrons, unbound valence electrons, and half the shared electrons.


Why do the valence electrons in nitrogen experience a greater effective nuclear charge than the valence electrons in beryllium?

valence electron in nitrogen


How many valence electrons do metals have?

Metals as found in the Periodic Table have no "extra" electrons. They are electrically neutral because they have the same amounts of protons and electrons or + and - charges respectively. However metals react with non-metals to form Ions, cations to be more precise, in this case they actually lose electrons resulting in a positive charge. In other words, metals never have "extra" electrons, they either have a neutral charge or they are lacking electrons and have a negative charge.


What is the most likely charge for an ion of Mg?

The most likely charge for an ion of magnesium (Mg) is 2+. This is because magnesium has two valence electrons, and it is energetically favorable for it to lose these electrons and achieve a stable octet configuration, resulting in a +2 charge.


If an atom of iodine gains an electron what is the charge of the resulting ion?

5p


How do you find the charge of an atom with 7 valence electrons?

The halogens, group 17, have 7 valence electrons. When they form ions, they gain 1 more valence electron and become ions with a charge of 1-.


What has 18 electrons and a charge of -3?

The phosphorus -3 ion. The phosphorus -3 ion gains 3 electrons and acts like argon.