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hydrogen (H) and helium (He)
Jeffry Ortiz
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∙ 12y agohydrogen
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How many shell do 2 electrons need?
Only one. The first shell can have up to 2 electrons.
Why does an atom with only one electron in its valence shell make a better conductor than an atom with seven electrons in its valence shell?
these atoms offer the least amount of resistance for knocking the valence electron out of its orbit.
How many shells do the 4th period elements have?
Every element in the first period has only one orbit. This means that they can have only a duplet in their valence shell, which happens to be their only electronic shell. The elements included in the first period are Hydrogen and Helium.
Two electrons in helium are placed in only one shell while three electrons in lithium occupy two shells?
It is because the two electrons in helium are placed in K-shell. The K-shell has the capacity of only two electrons. Therefore, in Lithium the third electron is placed in the L-shell. You can find the capacity of a shell to hold electrons by the formula 2n2 where n is the shell no.
What is the electron shell diagram for helium?
Helium has one energy shell with only 2 electrons in it.
How many shell do 2 electrons need?
Only one. The first shell can have up to 2 electrons.
How an insulator work?
All atoms have electrons that orbit the nucleus, we are concerned with the outermost orbit. The outer orbit shell can have from 1 to 8 electrons. The fewer electrons an atom has in this orbit the better it is at conduction (one or two electrons, it is easy to knock one of the electrons out of orbit and pass to the next atom). The more electrons you have, the better it is at insulating. Nothing is a perfect insulator, if you apply enough voltage the electrons will move (current will flow). This is why the insulation on conductors have a voltage rating.
Why does an atom with only one electron in its valence shell make a better conductor than an atom with seven electrons in its valence shell?
these atoms offer the least amount of resistance for knocking the valence electron out of its orbit.
How many shells do the 4th period elements have?
Every element in the first period has only one orbit. This means that they can have only a duplet in their valence shell, which happens to be their only electronic shell. The elements included in the first period are Hydrogen and Helium.
When would an atom be chemically stable not react?
According to Madelung rule the no. of electrons filled in a shell or orbit depends on the energy of shell or orbit . lower is the energy of shell higher will be its priority for electron filling. 1st orbit can have 2 electrons 2nd orbit can have 8 electrons 3rd orbit can have 18 electrons 4th one can have 32 electrons and so on. These are the most stable configurations of atoms. it seems that only electrons are responsible for atom's stability, because they are present outside nucleus of atom and take part in the chemical reaction. As it is natural fact that every object in this world try to attain stability, the same principle applies on the stability of atom. if an atom have 5 electrons it will either try to gain 3 more electrons or try to lose 3 electrons as it will try to attain the most stable configuration as it is given above. Only after attaining the stable configuration, the atom will be inert i.e.it will not react.
Two electrons in helium are placed in only one shell while three electrons in lithium occupy two shells?
It is because the two electrons in helium are placed in K-shell. The K-shell has the capacity of only two electrons. Therefore, in Lithium the third electron is placed in the L-shell. You can find the capacity of a shell to hold electrons by the formula 2n2 where n is the shell no.
What is the electron shell diagram for helium?
Helium has one energy shell with only 2 electrons in it.
What is the Valence electron in He?
helium has only one shell with two electrons and can be considered to be as the valence electrons.
How does helium differ from the other elements in its family noble gases?
It differs because it only has 2 electrons in its valence shell, and all the other noble gases have 8 electrons.
How many electrons fill the outer shell of helium?
There is only one electron inhabiting hydrogen and the compound therefore only has one shell, effectively making that shell the outer shell. TL;DR There is 1 electron in the outer shell of hydrogen.
How many spaces are in the valence shell of helium?
Helium has only one shell with a total of 2 electrons.
Does helium have 2 electrons in its last shell?
Yes. It has one shell, and there are 2 electrons in this shell.
