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Because halogens have seven valance electrons they tend to accept one electron into their valance shell to complete the octet of eight valance electrons. Naturally, electrons are negatively charged giving the anion a - 1 charge.
Cl -
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Wiki User
∙ 11y ago
Wiki User
∙ 9y agoHalogens form ions with a negative electrical charge because they have 7 valence electrons. They will readily gain an 8th valence electron in the form of negative charge to attain noble gas configuration.
Wiki User
∙ 11y agoChlorine is a group 17 element and has 7 valence electrons. An extra electron forming a negative ion (anion) wold give chlorine the electronic configuration of argon , a noble gas, which has the "octet" of electrons in its valence shell.
Wiki User
∙ 12y agoHalogens are highly electronegative.they therefore form ions with elements which are electropositive being metals situated on the left hand side of the Periodic Table. Due to them having an almost stable octet,and higher effective nuclear charge than metals they have a greater affinity for electrons and gain electrons during such reactions forming anions....
Wiki User
∙ 12y agobecause they are in group 7 of the periodic table, which means that for them to have a full outer shell they need to gain one electron. Because electrons are negativley charged they have a negative 1 charge.
Wiki User
∙ 10y agoпотому что
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Do metallic elements tend to form cations rather than anions?
no
What is the difference between elements that tend to form anions or form cations?
In general, metals form cations (positive ions) and non-metals form anions (negative ions.) This is because metals have fewer valence electrons, and lose them when they bond, and non-metals have more, and gain them when they bond.
Why do chlorine fluorine and bromine act in a similar way?
Chlorine , fluorine ,and bromine belongs to halogen family. They have 7 valence electrons and gains 1 electron to form anions.
Are non metals cation or anion?
Non metals tend to form Anions as they gain electron(s). This occurs normally and usually naturally. There are cases where nonmetals can become Cations as well but it would take a lot of energy to take away an electron from the valence shell. (Refer to Ionization Energy)
Why do atoms of non-metals form anions?
Non metals tend to be at the Right Hand Side of the periodic table. They therefore tend to need to GAIN electrons to get a stable octet-noble gas configuration. Gaining electrons mean they become anions. The reverse is true for metals.
Do metallic elements tend to form cations rather than anions?
no
Do Metals tend to have higher electronegative than nonmetals and therefore tend to form anions?
No. Metals generally have lower electronegativity and form cations.
Is fluorine an alkali metal or halogen?
No single element can be both an alkali metal (form +1 cations) and a halogen (form -1 anions).Alkali metals :LithiumSodiumPotassiumRubidiumCesiumFranciumHalogens:FluorineChlorineBromineIodineAstatine
What is the difference between elements that tend to form anions or form cations?
In general, metals form cations (positive ions) and non-metals form anions (negative ions.) This is because metals have fewer valence electrons, and lose them when they bond, and non-metals have more, and gain them when they bond.
Which group of elements form cations?
what are true about cationA.Metals are not likely to form cations.B.Cations are always smaller than the neutral form of the element.C.Cation size decreases as you go down a group.D.All cations are larger than any anion.E.Cations cannot form in nature.
Why do chlorine fluorine and bromine act in a similar way?
Chlorine , fluorine ,and bromine belongs to halogen family. They have 7 valence electrons and gains 1 electron to form anions.
Are non metals cation or anion?
Non metals tend to form Anions as they gain electron(s). This occurs normally and usually naturally. There are cases where nonmetals can become Cations as well but it would take a lot of energy to take away an electron from the valence shell. (Refer to Ionization Energy)
What types of atoms tend to form ironic?
Metals and nonmetals tend to form ionic bonds to to electronegativity differences. NaCl = sodium, a Group I ( Alkali ) metal and chlorine, a Halogen of Group VII.
How can you tell what type of ion an atom will form by looking at the periodic table?
elements which have 1 to 3 valence electrons will generally lose electrons and form cations. elements which need 1 to 3 electrons to attain the nearest noble gas configuration will generally gain electrons and form anions
Why do atoms of non-metals form anions?
Non metals tend to be at the Right Hand Side of the periodic table. They therefore tend to need to GAIN electrons to get a stable octet-noble gas configuration. Gaining electrons mean they become anions. The reverse is true for metals.
If atoms of a halogen nonmetal gain one electron the atoms the have?
They become anions, with negative electrical charge.
Which tends to form anions when bonding with other elements?
Anions are negative ions, so any element that gains a negative charge in a chemical reaction. Some examples of elements that commonly do this are the halogens (flourine, chlorine, bromine, iodine, astatine) and oxygen.
