As a neutral atom lose an electron then it becomes a positive ion
As it gains an electron then it becomes a negative ion
If the chemical bond is ionic, an electron is gained or lost. If it is covalent, the electron is shared equally; if it is polar covalent, the electron is shared unequally. If the bond is intermolecular, no parts of the atom are actually shared, gained, or lost; the atom itself is simply attracted to other atoms.
Xenon is a noble gas and typically does not react with other elements to gain, lose, or share electrons in chemical reactions. Its outer electron shell is already full, making it stable and unreactive.
The metal tends to lose the electron because it has a higher electron affinity, and the nonmetal tends to gain the electron because it has a higher electronegativity. This has to do with the placement of the element on the periodic table. The further to the right you go, the more the element wants to gain electrons in an ionic compound.
Boron, Krypton,Neon, and Radon Krypton, Neon and Radon do not gain electrons. Because an atom wants to have eight electrons in their valence shell or their outermost shell, and Krypto, Neon and Radon are Noble Gases which already have eight in their valence shells, so they don't lose or gain electrons. And as for Boron it want's to gain 5 electrons because it only has three in its valence shell.
Atoms do not always lose electrons. Electrons can be gained too. Atoms always try to have their outer most shell filled, and some atoms such as ones of potassium can easily lose an electron rather than gain an electron. So it would lose an electron to a different atom so that it would have a full outer shell and the other atom would also have a full outer shell.
gain
Gain of one electron
gain
Krypton tends to neither lose nor gain electrons since it has a full outer electron shell, making it stable.
Lose or gain an electron
No. They gain electrons
For example metals loss electrons and nonmetals gain electrons.
A stable electron configuration.
Neither. It does not form ions.
It shrinks loosing an electron.
Generally metals lose electrons and nonmetals gain electrons.
Sodium will lose 1 electron in its compounds.