Elements on the right of the Periodic Table but not in group 0/8 tend to gain electrons. Those in group 7 tend to gain 1 electron and those in group 6 tend to gain 2.
Iron can both gain and lose electrons depending on the reaction it is involved in. In general, iron tends to lose electrons to form positively charged ions, such as Fe2+ or Fe3+, but it can also gain electrons to form negatively charged ions, such as Fe2-.
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.
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.
Argon is a Noble Gas. Thus it does not lose or gain electrons.
Silicon will tend to gain electrons in order to achieve a stable outer electron configuration, as it has 4 valence electrons and typically forms covalent bonds with other elements by sharing electrons.
Fluorine gains electrons to achieve a stable electron configuration. It has seven valence electrons and tends to gain one more electron to complete its outer shell and attain a full octet.
It can do both. It gains electrons in Phosphene, loses electrons in Phosphate.
Oxygen tends to gain two electrons to fill its outer shell, resulting in a deficiency of electrons.
Potassium will lose electrons when reacting with bromine. Potassium is a metal and tends to lose electrons to achieve a stable electron configuration, while bromine is a nonmetal that tends to gain electrons to achieve a stable electron configuration.
Iron can both gain and lose electrons depending on the reaction it is involved in. In general, iron tends to lose electrons to form positively charged ions, such as Fe2+ or Fe3+, but it can also gain electrons to form negatively charged ions, such as Fe2-.
A chlorine atom would gain one electron to become an ion because it tends to achieve a stable electron configuration by having a full outer shell of electrons.
Oxygen tends to gain two electrons to complete its "octet", making it O2- with the electron configuration 1s22s22p6
Chlorine will gain electrons in the reaction with calcium. Chlorine is a halogen, which tends to gain an electron to achieve a full outer shell, while calcium is a metal that tends to lose electrons to achieve a stable electron configuration.
Iodine tends to gain one electron when it forms an ion.
Tellurium tends to gain electrons in chemical reactions to achieve a full outer shell and attain the stable electron configuration of a noble gas. It typically forms -2 oxidation state by gaining two electrons.
Krypton tends to neither lose nor gain electrons since it has a full outer electron shell, making it stable.
it is a noble gas, it doesn't do either one