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Why is it difficult to determine electron affinities for metals?
Wiki User
∙ 12y ago
Most metals, especially those in the alkali and alkaline groups, want to form cations by giving away rather than forming anions by assuming an electron from another atom. For this reason, it is difficult to measure the electron affinities of metals.
Wiki User
∙ 12y ago
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Would you expect nonmetals to have larger electron affinities than metals?
Yes. Non metals have larger electron affinity than metals as non metals accept electrons more easily than metals.
Why does electron affinity increase going left to right?
In general, electron affinity does not increase steadily from left to right. Firstly, only non-metals have electron affinities greater than 0. Secondly, the ordering of these electron affinities is O<N<F; S<P<Cl
Which element group have the most positive electron affinities?
The group that has a substantial affinity for electrons is group 17, the halogens. These elements have 7 valence electrons which makes them have the highest affinity for electrons.
Does gold become an ion by losing an electron?
Gold, like all metals, loses electrons when it ionizes, but also note that it is very difficult to ionize gold.
What do metals and non metals mean in science?
A short answer is: metals are electron donors and nonmetals accept electrons.
Would you expect nonmetals to have larger electron affinities than metals?
Yes. Non metals have larger electron affinity than metals as non metals accept electrons more easily than metals.
Why does electron affinity increase going left to right?
In general, electron affinity does not increase steadily from left to right. Firstly, only non-metals have electron affinities greater than 0. Secondly, the ordering of these electron affinities is O<N<F; S<P<Cl
Why do metals and non-metals usually form ionic compounds whereas two bonded non-metals are never ionic?
First an explanation in terms of ionization energy and electron affinity: Metals have low ionization energies and readily form ions. Non-metals have high electron affinities- so put them together and electron transfer is favourable. Two bonded non metals are generally covalent- their ionization energies are high. Now an explanation in terms of electronegativity (electronegativity is related to ionization energy and elctron affinity) metals have low electronegativity- non metals are comparativelly high. So electron transfer is likely. Just a cautionary word about compounds of non metals never being ionic-- what about PBr5- a binary compound of two non metals- in the solid state this has the structure PBr4+ Br-...bit of a cheat really as there is a polyatomic ion in there but it is ionic!
How many valence electron does alkali metals have?
Alkali metals have one valence electron.
Which element group have the most positive electron affinities?
The group that has a substantial affinity for electrons is group 17, the halogens. These elements have 7 valence electrons which makes them have the highest affinity for electrons.
What type of metals such as sodium have a single valence electron and very reactive?
Highly reactive metals with one valence electron are known as Alkali metals.
What type of metals such as sodium have a single valence electron are very reactive?
Highly reactive metals with one valence electron are known as Alkali metals.
Metals with two electron in the outer level?
Alkaline metals
For Group 2A metals which electron is the most difficult to remove?
The only one that does move is the outer electron. That is why they have a valency of 1 and it is also why their reactivity increases down the group as the attraction of the nucleus becomes less as the outter electron becomes further away from it.
Does gold become an ion by losing an electron?
Gold, like all metals, loses electrons when it ionizes, but also note that it is very difficult to ionize gold.
Why are metals grouped together?
Metals are grouped together according to their electron structure.
What is the characterisitc of the outer electron shell of alkali metals?
The oute (valence) shell of the alkali metals contains just one electron
