it would depend on amino acid in question. pH above amino acid pI, zwitterion will carry net negative (-) charge. at pH below pI, zwitterion will carry net positive (+) charge. depending on the amino acid, some have more than one acidic or basic functional group. such functional groups can make the amino acid vary in net charge from 2- to 2+ if not more.
Well, it would be sodium-83, if it were even remotely possible that such a thing could possibly exist for even an instant. If 83 is a typo and you meant "23", then the answer is the sodium-23 ion.
A sodium ion would have a charge on it, such as a positive charge, a cation, or a negative charge, an anion. Take your charge to be Na+1. This means that sodium is missing one electron, thus having one more proton giving it a positive charge. Na normally has 11 electrons, but this plus one knocks it down to 10. Neon at a neutral charge has 10 electrons. So, a sodium ion and neon atom have the same number of electrons (but only if the Na ion is +1 charge).
+1
Consider an atom of oxygen in which the nucleus contains 8 protons and 8 neutrons. If it is doubly ionized, what is the charge of the oxygen ion and how many electrons remain in the ion?
A certain element forms an ion with 10 electrons and a charge of +2. Identify the element
The electrical charge is 3-.
Well, it would be sodium-83, if it were even remotely possible that such a thing could possibly exist for even an instant. If 83 is a typo and you meant "23", then the answer is the sodium-23 ion.
An Oxygen atom would never contain 10 electrons on its own. It would have a maximum of 8 electrons at one time, unless the "oxygen atom" you are referring to is in fact an oxygen ION, in which case the charge would be -2. However, an oxygen ion can never be "by itself". It must be bonded with either itself as a diatomic or with another element as a compound.
The charge on a magnesium ion with 10 electrons (Mg2+) is +2.
The number of electrons are required to predict the charge of the ion.
12 + 10 = 22 charge
12 + 10 = 22 charge
A sodium ion would have a charge on it, such as a positive charge, a cation, or a negative charge, an anion. Take your charge to be Na+1. This means that sodium is missing one electron, thus having one more proton giving it a positive charge. Na normally has 11 electrons, but this plus one knocks it down to 10. Neon at a neutral charge has 10 electrons. So, a sodium ion and neon atom have the same number of electrons (but only if the Na ion is +1 charge).
10
A sodium atom has 11 electrons so the total charge of all the electrons in a sodium ion is -10.
Magnesium has 12 protons, so if there are only 10 electrons, then it will have a +2 charge.
+2