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We all know that helium is a noble gas. It has atomic number 2 but it is placed in 18 group be because in 1st group the elements have only one electron in thier s orbital e.g. Hydrogen, lithium, sodium, potassium etc. But helium has two electron so it cannot exist in 1 group. In second group the s orbital are same but the physical and properties of helium is different from the elements present in second group. According to modern Periodic Table elements which have same physical properties are placed in same group. Since helium is an inert gas and its physical properties are similar to the other elements of the 18 group and also helium discoverd late so that hilium can be put in the 18 group
What else can I help you with?
Why can helium be placed in group II?
The reason it can be placed in group II is because it has 2 electrons in its outside shell (also its only shell) and the groups represent how many electrons in the elements outside shell, the reason it is normally placed in group 8 or 0 is because the first shell has a maximum of 2 electrons and all elements that have a full outside shell are placed in group 8/0 and can't normally react.
What is the position of helium on the periodic table snd its chemical properties based on that position?
Helium is placed at the top of the group-18 in periodic table. Its valence shell contains 2 electrons. It is inert in nature like other elements of group-18.
Which group helium belong?
group 18
What groups is helium in?
Group 18, the noble gases.
What group is the element helium located in on the periodic table?
Helium is located on the group 18 and period 1 on the modern periodic table.
What gas does helium falls in.?
Helium (He) is a noble (inert) gas placed in the group 18 of the Periodic Table.Helium falls in inert gas. It is stable and non-reactive.
Why can helium be placed in group II?
The reason it can be placed in group II is because it has 2 electrons in its outside shell (also its only shell) and the groups represent how many electrons in the elements outside shell, the reason it is normally placed in group 8 or 0 is because the first shell has a maximum of 2 electrons and all elements that have a full outside shell are placed in group 8/0 and can't normally react.
Why is helium in group 18 in the periodic table?
We all know that helium is a noble gas. It has atomic number 2 but it is placed in 18 group be because in 1st group the elements have only one electron in thier s orbital e.g. Hydrogen, lithium, sodium, potassium etc. But helium has two electron so it cannot exist in 1 group. In second group the s orbital are same but the physical and properties of helium is different from the elements present in second group. According to modern Periodic Table elements which have same physical properties are placed in same group. Since helium is an inert gas and its physical properties are similar to the other elements of the 18 group and also helium discoverd late so that hilium can be put in the 18 group
What is the position of helium on the periodic table snd its chemical properties based on that position?
Helium is placed at the top of the group-18 in periodic table. Its valence shell contains 2 electrons. It is inert in nature like other elements of group-18.
Is helium an ion?
Yes helium is an atom. It is stable. It is placed in group 18.Yes, helium is a monoatomic molecule. It is stable itself as it has already achieved maximum possible electrons in its outermost shell. It is the only element in group 18 without 8 electrons in valence shell.
Which group helium belong?
group 18
What groups is helium in?
Group 18, the noble gases.
What column is helium neon and argon in?
Helium and neon are in the same group, Group 18 (Noble Gases), also known as Group 8A. Argon is also in Group 18.
What is the element in period one and group 8 of periodic table?
Helium is the element that is placed in period 1 and group 18 of the periodic table. It is inert in nature and hence stable.
What category is helium in?
Helium is a noble gas, a group 18 element
What group is the element helium located in on the periodic table?
Helium is located on the group 18 and period 1 on the modern periodic table.
Why is neon in the same group of periodic table as helium?
Neon and helium are in the same group (Group 18, Noble Gases) because they both have a full outer electron shell, making them stable and unreactive. This shared electron configuration defines their chemical properties and places them together in the periodic table.
