0
the number of electrons found in the third shell of an helium atom are nill because its atomic number is 2
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
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 do atoms in the same period have?
Their outermost electrons are in the same shell. For example, Helium and Hydrogen have 1 and 2 electrons respectively, and these electrons exist within the first electron shell. Lithium has 3 electrons and the third of these electrons is in the second electron shell, and so, it is a member of the 2nd period of the periodic table.
Why is helium an exception to the noble gases?
A Noble Gas does not need to have eight electrons to be classed as such - it simply must have a full outer shell. The first shell can only hold two electrons, which is what helium has, so helium is a Noble Gas. The second and third shells hold eight electrons, which is why other noble gases can be seen as having eight electrons. However no Noble Gases have eight electrons in total - just eight in the outer shell, as the shells fill from the inside out...
What is the configuration of an atom with 31 electrons?
the first shell: 2 electrons The second shell: 8 electrons The third shell: 18 electrons The fourth shell: 3 electrons
How many shells does helium have?
in the first shell there are 2 electrons there is only one shell because the rule is first shell 2 second shell 8 third shell 8 forth shell whats left unless it is a transition metal then their is always two on the out side unless in is copper or chromium then there is just one and the third shell has the leftovers up to 18 . sorry i got a little cared away
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 do atoms in the same period have?
Their outermost electrons are in the same shell. For example, Helium and Hydrogen have 1 and 2 electrons respectively, and these electrons exist within the first electron shell. Lithium has 3 electrons and the third of these electrons is in the second electron shell, and so, it is a member of the 2nd period of the periodic table.
What is heliums first orbital shell second and third?
helium has 2 electrons in its 1st orbital. It doesn't have 2nd or 3rd orbitals.
How many electrons does sulfur have in its third electron shell?
Sulfur has six electrons in its third electron shell.
Why is helium an exception to the noble gases?
A Noble Gas does not need to have eight electrons to be classed as such - it simply must have a full outer shell. The first shell can only hold two electrons, which is what helium has, so helium is a Noble Gas. The second and third shells hold eight electrons, which is why other noble gases can be seen as having eight electrons. However no Noble Gases have eight electrons in total - just eight in the outer shell, as the shells fill from the inside out...
What is the configuration of an atom with 31 electrons?
the first shell: 2 electrons The second shell: 8 electrons The third shell: 18 electrons The fourth shell: 3 electrons
How many shells does helium have?
in the first shell there are 2 electrons there is only one shell because the rule is first shell 2 second shell 8 third shell 8 forth shell whats left unless it is a transition metal then their is always two on the out side unless in is copper or chromium then there is just one and the third shell has the leftovers up to 18 . sorry i got a little cared away
Is the third shell full?
First shell has 2 electrons. Next shell has 8 electrons. The third shell has 18 but scientist say 8 so they don't confuse graphs.
2 Electron in firsat shell 8 electrons in second shell and 6 electrons in third shell?
No, its two electrons in the first, 8 electrons in the 2nd and 3rd shell if its stable
How many electrons fit 1st energy level?
The inner electron shell (also known as the s shell) can hold only two electrons. There are only two elements, hydrogen and helium, whose electrons all fit into the first shell.
How many electrons are in the first shell second shell and third shell of neon?
It depends what electronic state it's found in, but in it's ground state (natural form) it has two electrons in the first shell, eight in the second and none in the third. This is because it has an atomic number of 10. 2+8 = 10.
How many electrons can the second shell of an atom hold?
First Shell always has 2 electrons. Second shell onwards can have up to a maximum of 8 electrons.
