All elements in the 7th family/group (2nd from the right) on the Periodic Table.
Yea.
sodium must lose 1 electron, helium is a noble gas it is in group 8 check your periodic table, sufide ion must gain 2 electrons
Yes, that is part of the definition of electron affinity.
Atoms that gain extra electrons become negatively charged. A neutral chlorine atom.
All elements in the 7th family/group (2nd from the right) on the Periodic Table.
Yea.
Gain of an electron transform the atom in an anion.Loss of an electron transform the atom in a cation.
They form an ionic compound.
When Group 7A elements form ions, they gain an electron to achieve a stable electron configuration. This causes the atom to have a net negative charge since it now has one more electron than protons present in its nucleus.
when an any atoms want to achieved a state of nearest an inert atom, its gain electron
Lose or gain an electron
No. A metallic atom will typically lose electrons.
Electron affinity is the energy released when an atom gains an electron to form a negative ion, while electron gain enthalpy is the enthalpy change accompanying the addition of an electron to a gaseous atom. Electron affinity is a specific term used in the context of forming an ion, while electron gain enthalpy is a general term for the enthalpy change associated with gaining an electron.
An atom of chlorine and an atom of bromine both have the same number of valence electrons in their outermost shell, which is 7 electrons. This makes them both part of Group 17 of the periodic table, known as the halogens. Each atom will typically gain one electron to achieve a stable electron configuration.
The atom may gain or lose an electron either making it positive or negative.
sodium must lose 1 electron, helium is a noble gas it is in group 8 check your periodic table, sufide ion must gain 2 electrons