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The configuration [He] 2s2 2p2 describes the element in the 2nd row (since He finishes the first row) in the second of the 'p' columns, #14. This corresponds to the element carbon.

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Q: Which element is predicted to have the ground-state electron configuration He 2s 2 2p 2?
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What elements has a ground-state electron configuration different from the predicted one?

There are many elements among the transitional elements which has the electron configuration differed than predicted. Such element with the lowest atomic number is chromium.


Which element has a single electron in the 2p sublevel?

The element that has a single electron in the 2p sublevel is boron. The electron configuration of Boron is 1s22s22p1.


What is the electron configuration of element 39?

The electron configuration of the element with the atomic number 39 (yttrium) is: [Kr]4d15s2.


What element has the ground-state electron configuration of Ar4s23d6?

The element with that electron configuration is Iron.


Why does chlorine have more electron affinity than fluorine although it is below fluorine in periodic table?

Generally electron affinity goes up as you go from left to right across the periodic table, and decreases as you go down a column. However, fluorine is an exception -- and the element with the highest electron affinity is chlorine.(Note that the most electronegative element is fluorine however; 'electronegativity' is not exactly the same as 'electron affinity'.)Electronegativity is the ability of an atom in a molecule to draw bonding electrons to itselfElectron affinity is a measure of the energy change when an electron is added to a neutral atom to form a negative ion.The reason that the electron affinity is not as high as might otherwise be predicted for fluorine, is that it is an extremely small atom, and so it's electron density is very high. Adding an additional electron is therefore not quite as favorable as for an element like chlorine where the electron density is slightly lower (due to electron-electron repulsion between the added electron and the other electrons in the electron cloud).

Related questions

What is the Noble-gas electron configuration of gold?

The element gold (atomic number 79) has the electron conguration of [Xe] 4f14 5d10 6s1


What elements has a ground-state electron configuration different from the predicted one?

There are many elements among the transitional elements which has the electron configuration differed than predicted. Such element with the lowest atomic number is chromium.


How many electron energy shells are in roegenium?

It's predicted that this element will be shown to have seven. Please see the link.


What element has no electron affinity?

Helium has no electron affinity.


How many elements does the outer electron have?

An electron is not an element.


Which element has a single electron in the 2p sublevel?

The element that has a single electron in the 2p sublevel is boron. The electron configuration of Boron is 1s22s22p1.


Is an electron made of a single element?

The electron is not a chemical element: it is a small elementary particle with a negative electrical charge.


What is the electron configuration of element 39?

The electron configuration of the element with the atomic number 39 (yttrium) is: [Kr]4d15s2.


Which element has 1 valence electron and is in period 1.?

The element with 1 electron in period 1 would be hydrogen.


What element has the ground-state electron configuration of Ar4s23d6?

The element with that electron configuration is Iron.


What element has 125 atomic number?

Unbipentium, but the element is only predicted at this moment and has never been observed.


How do you know calcium is an electron?

You don't. Calcium is not an electron, calcium is a element