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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
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoWiki User
∙ 11y agobecause it is a noble gas and has completely filled orbital (s orbital)
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What is the group name in which helium is found?
Helium is a Noble Gas in Group O.
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 does HE stand for in the peridoic table of elements?
Helium (He) in a noble or inert gas, and it is in Group 18 of the 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.
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.
What is the group name in which helium is found?
Helium is a Noble Gas in Group O.
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.
Which group helium belong?
group 18
Why is neon in the same group of periodic table as helium?
Neon and helium fall under the same column in the periodic table. Both has stable electron shell.
What groups is helium in?
Group 18, the noble gases.
What category is helium in?
Helium is a noble gas, a group 18 element
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 does HE stand for in the peridoic table of elements?
Helium (He) in a noble or inert gas, and it is in Group 18 of the periodic table.
Why the helium is not included in noble gases group?
Helium is include in the group 18 along with the noble gases.
