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an ionic compound is formed

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Q: What is it when 2 atoms gain or loses an electron?
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What 2 way are ions form from atoms?

1. Gain an electron. 2. Lose an electron.


Loss or gain of electron for calcium?

Calcium usually loses 2 electrons, giving a cation of Ca2+


How many atoms will rubidium gain?

1. Rubidium don't gain atoms ! 2. If you think to electrons rubidium loss one electron and becom a cation.


What heppens when a atom gains or loses electrons?

When an atom gains or loses electrons, it gains a negative or positive charge respectively. Atoms generally try to gain enough electrons to fill their outer, valence electron shell. For the first shell the number of electrons is 2 and for all others, atoms usually want 8 electrons.


Does sulfate ion have negative charge because it has gained 2 electrons?

When it gain electrons, it loses ions. (non-metal) Where as when it loses electron, it gains ions. (metal)


Why does Li have a 0 charge?

Lithium does not have a '0' charge. Its electron configuration is 2,1. This means there is one valence electron in its outer shell. Losing this electron will make Lithium have a full shell (2 only) which all atoms try to achieve, therefore Li has a +1 charge because it loses an electron to gain noble gas configuration.


Does iodine gain or loss electron?

Barium loses electrons to obtain a stable octet, like any other metal.


How many electrons does oxygen have to gain in order to achieve a noble-gas electron configuration?

Lithium has one valence electron. It is much easier for an atom to lose one electron than gain seven more. Lithium looses this one electron to achieve a full outer shell (the next inside shell is full).


How does a atom become a positive ion?

This is by gaining (-) or losing (+) electrons


What happens if a calcium atom loses an electron to a chlorine atom?

Because calcium has 2 valence electrons, it needs to get rid of them to have a stable noble gas conformation. Chlorine atom has 7 VE and only needs to gain one electron to have the noble gas conformation. Therefore one calcium will give one electron to two chlorine atoms, therefore resulting in an ionic bond.


How many electrons must bromine br gain or lose?

Boron can lose 3 electrons from its valence shell that is 2 in 2s & 1 in 2p sub-shell, wheras it cannot gain electron b'coz of its electropositive nature & it has less electron affinity.


Which atom gains one electron?

most non metals (except for the group 18 elements) NITROGEN(N) SULFUR(s) CHLORINE (CI)