There is none because there is no noble gas above Helium
The electron configuration of helium is 1s2.
Helium has a very simple electron configuration: 1S2
Noble gas configuration has 8 valence electrons, as ns2 np6.
1s1
The electron configuration of helium is 1s2.
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration.
As it has two postively charged protons in it (along with two neutrons), a Helium nucleus has two electrons 'orbiting' around it. Knowing this, we need to find which orbits they are in. The lowest energy orbital in an atom is made up of a single 'S' orbital (the 's' describes its shape - spherical) with a principal quantum number of 1 (which indicates the size of the orbital, 1 being the smallest). This is therefore denoted 1s . This orbital can accept two electrons, so both of the helium electrons go into it. The way to express this as a electron configuration is 1s2 , the superscript '2' indicating the number of electrons in the orbital. Feel free to stop at that point. To be a bit more technical, when we write 1s2 the '1s' is actually a mathematical wavefunction, and the superscript '2' is there because there are two electrons whose wavefunction is 1s, and so we multiply those wavefunctions together - hence the configuration actually means 1s-squared.
How many atoms / electron clouds does helium have ?
Yes it does. Helium has 2 electrons in the s orbital. A s orbital can hold a maximum of two electrons.
Electron configuration of helium: 1s2
The electron configuration of helium is 1s2.
The electron configuration of helium is 1s2. This means that there are two electrons in the 1s orbital in helium.s stands for the orbital in which the electrons are present
There are 2 electrons in the 1s orbital so the configuration is 1s2.
The electron configuration of beryllium is written as [He] 2s2. This means that it has 2s2 electrons above the configuration of Helium.
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration.
Helium has two valence electrons in the 1s orbital.
As it has two postively charged protons in it (along with two neutrons), a Helium nucleus has two electrons 'orbiting' around it. Knowing this, we need to find which orbits they are in. The lowest energy orbital in an atom is made up of a single 'S' orbital (the 's' describes its shape - spherical) with a principal quantum number of 1 (which indicates the size of the orbital, 1 being the smallest). This is therefore denoted 1s . This orbital can accept two electrons, so both of the helium electrons go into it. The way to express this as a electron configuration is 1s2 , the superscript '2' indicating the number of electrons in the orbital. Feel free to stop at that point. To be a bit more technical, when we write 1s2 the '1s' is actually a mathematical wavefunction, and the superscript '2' is there because there are two electrons whose wavefunction is 1s, and so we multiply those wavefunctions together - hence the configuration actually means 1s-squared.
How many atoms / electron clouds does helium have ?
Helium.
Yes it does. Helium has 2 electrons in the s orbital. A s orbital can hold a maximum of two electrons.
Helium has 2 valence electrons and has completely filled orbitals / shells and helium is stable.