It needs just one electron to acquire a complete and stable outer shell.
Chlorine readily accepts another electron because it just needs to gain one more e- to complete its outer shell of valence electrons. Once chlorine's outer shell is filled, the element becomes more stable. Chlorine's whole family of elements (F, Cl, Br, I) all readily accept one more electron.
choline react readliy because it need to gain 1 electron to fill it's outer shell.
It would be -1 because gaining an electron will create a negative charge. F has a high electron affinity and therefore becomes an F- ion quite readily.
Sodium has only one electron to lose to become very stable and Chlorine has only 1 to gain to become stable. So this is overall a very favorable reaction energetically.
In most cases, chlorine is more reactive than bromine. This occurs because chlorine has a higher electronegativity than bromine. Thus, chlorine tends to take electrons from other substances more readily than bromine, and thus is more reactive.
negative
Chlorine readily accepts another electron because it just needs to gain one more e- to complete its outer shell of valence electrons. Once chlorine's outer shell is filled, the element becomes more stable. Chlorine's whole family of elements (F, Cl, Br, I) all readily accept one more electron.
It needs just one electron to acquire a complete and stable outer shell.
Because a sodium atom loses its outer electron very readily, and a chlorine atom gains one very readily. Thus they are a perfect match for one another.
Negative 1
Chlorine atom has 17 electrons. It is readily accepting an electron from another atom to obtain its stable electron configuration (of argon). A chloride ion has 18 electrons.
Chlorine will readily accept one electron to its outershell.
choline react readliy because it need to gain 1 electron to fill it's outer shell.
nonmetals form anions (negative ions). for a more thorough answer, they tend to form negative ions because they have high electron affinity (strong ability to attract electrons) and high ionization energy (very hard to take it's electron) and because metals have low electron affinity (attract electrons weakly) and low ionization energy (very easy to take it's electron), thus, the metal readily gives up it's electron and the nonmetals readily receive it to form negative ions.
The family of elements that react readily with metals is the halogens. This group includes elements such as fluorine, chlorine, bromine, iodine, and astatine. Halogens are highly reactive nonmetals that readily form compounds with metals by gaining an electron to achieve a stable electron configuration.
Sodium has a valence of +1, because it has 1 valence electron, which it will readily lose to form compounds with non-metals. Chlorine has a valence of -1, because it needs 1 electron to fill its outer electron energy level (it already has 7). Like sodium, it is easy for chlorine to do this, since it only needs one. In fact, sodium and chlorine easily react with each other to from sodium chloride, or salt.
It would be -1 because gaining an electron will create a negative charge. F has a high electron affinity and therefore becomes an F- ion quite readily.