0
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 else can I help you with?
Why is helium normally placed in group 18?
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
Why is helium placed in group vii?
Helium has a full outmost valence shell. It is a nobel gas. it doesn't react with other chemicals. because the atomic number is 2 so it has to be in group 18 as it also has noble gases.
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.
Why is helium's position not justified in periodic table?
Helium has 2 valence electrons and it should theoretically be placed along with group 2 elements. But since helium has completely filled orbitals (as do the noble gases), it is placed along with the noble gases.
Is helium in a group listed on the periodic table?
Helium is not a group. It is an element.
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 is helium normally placed in group 18?
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
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
Why is helium placed in group vii?
Helium has a full outmost valence shell. It is a nobel gas. it doesn't react with other chemicals. because the atomic number is 2 so it has to be in group 18 as it also has noble gases.
If an atom in group 18 is placed near an atom of group 2 what will usually happen?
Nothing. Group II metals are reactive, but the group 18 or inert gases are not.
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.
Why is helium's position not justified in periodic table?
Helium has 2 valence electrons and it should theoretically be placed along with group 2 elements. But since helium has completely filled orbitals (as do the noble gases), it is placed along with the noble gases.
Is helium in a group listed on the periodic table?
Helium is not a group. It is an 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.
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.
Why is helium placed in group 8 if it has two valence electrons?
Helium is placed in group 8 (or 18) of the periodic table because it has a full outer electron shell, making it stable like the other noble gases in that group. Despite having only two valence electrons, helium achieves a stable electron configuration by having a full first electron shell.
Is helium or lithium more like hydrogen?
Hydrogen is more like Helium as it is a gas and will combust in the presence of oxygen.Even though hydrogen is placed in the same group as all the reactive metals such as sodium and potassium, this is one exception where the properties hydrogen does not match the others in the same group.
