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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.
An electron cannot gain or lose electrons because it is a fundamental subatomic particle with a fixed negative charge. Instead, electrons can be transferred between atoms or molecules, causing some atoms to become positively charged (when they lose electrons) and others to become negatively charged (when they gain electrons). In this context, the behavior of electrons is determined by their interactions with other particles rather than changing their own quantity.
When you lose an electron, you become positively charged because you have more protons than electrons. When you gain an electron, you become negatively charged because you have more electrons than protons. This process is known as ionization.
A stable electron configuration.
Neither. It does not form ions.
Generally metals lose electrons and nonmetals gain electrons.