Po --> Polonium (gains 2 electrons to complete octet rule)
Ra --> Radium (loses 2 electrons to complete octet rule)
Both end up with 86 electrons, the same amount that Rn (Radon) has.
An example of an ion and atom that are isoelectric is sodium ion (Na+) and neon atom (Ne). They are both isoelectric with each other because they both have 10 electrons. Sodium ion loses one electron from its neutral state to become Na+, while neon gains one electron to become Ne.
The charge of a sulfide ion that is isoelectric with its nearest noble gas (argon) is -2. This means that the sulfide ion has gained two electrons in order to have the same electron configuration as the noble gas.
Radon not really can form an ion. This is because it is in the group 0, which is the inert/noble gases group. In this group all gases have a full octet which prevents them from reacting with other substances and so preventing them to have an ion. Group 1 has an ion of +1 as it has one electron in the valence shell while nothing such as +8 or -8 exists yet! Happ to help ;).
Electron configuration of radium:Ra: [Rn]7s2Ra(2+): 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d1o.4f14.5s2.5p6.5d10.6s2.6p6.
The only elements that form an ion isoelectric with krypton are the elements in Period 4 and Columns 15 through 17 of a wide form periodic table and the elements in Period 5 and Columns 1 and 2 of a wide form periodic table. All other elements do not form such an ion.
Bromide ion is isoelectronic with Krypton.
An example of an ion and atom that are isoelectric is sodium ion (Na+) and neon atom (Ne). They are both isoelectric with each other because they both have 10 electrons. Sodium ion loses one electron from its neutral state to become Na+, while neon gains one electron to become Ne.
The charge of a sulfide ion that is isoelectric with its nearest noble gas (argon) is -2. This means that the sulfide ion has gained two electrons in order to have the same electron configuration as the noble gas.
The isoelectric point of lysine is approximately 9.74.
The isoelectric point of tyrosine is approximately 5.66.
An isoelectric line on the electrocardiograph is the base line on an electrocardiogram.
These are the noble gases: He, Ne, Ar, Kr, Xe, Rn.
Oxygen
Radon not really can form an ion. This is because it is in the group 0, which is the inert/noble gases group. In this group all gases have a full octet which prevents them from reacting with other substances and so preventing them to have an ion. Group 1 has an ion of +1 as it has one electron in the valence shell while nothing such as +8 or -8 exists yet! Happ to help ;).
Electron configuration of radium:Ra: [Rn]7s2Ra(2+): 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d1o.4f14.5s2.5p6.5d10.6s2.6p6.
Some examples of isoelectric points in different molecules include glycine (pI of 6.0), histidine (pI of 7.6), and lysine (pI of 9.7). These molecules reach their isoelectric points when they have a net charge of zero.
The isoelectric point of a molecule is determined by calculating the average of the pKa values of its ionizable groups. This involves identifying the acidic and basic groups in the molecule, determining their pKa values, and then averaging them to find the isoelectric point.