0
Because it is a noble gas, it has completely filled orbitals (as to all the elements in group 18) and is chemically inert.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoBecause helium, like the noble gases, have the maximum number of valence electrons achieveable at a neutral charge.
Add your answer:
Earn +20 pts
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.
Which groups compose the mains group elements?
Main group elements have elements from groups 1 and 2, except hydrogen and groups 13 to 18. Main group elements are elements in groups who's lightest elements are shown by helium, lithium, boron, beryllium, carbon, nitrogen, oxygen, and fluorine.
Which is the odd one out helium argon hydrogen kryton?
Hydrogen is odd one as it is in group 1. The other elements are in group 18 (noble gases).
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
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 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 causes the propertiesof elements in a group to be simalar?
Same number of valence electrons cause same properties. The elements with same properties are grouped together. For example- the alkali metals are placed in group-1
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
Which groups compose the mains group elements?
Main group elements have elements from groups 1 and 2, except hydrogen and groups 13 to 18. Main group elements are elements in groups who's lightest elements are shown by helium, lithium, boron, beryllium, carbon, nitrogen, oxygen, and fluorine.
Which is the odd one out helium argon hydrogen kryton?
Hydrogen is odd one as it is in group 1. The other elements are in group 18 (noble gases).
What elements are in the s block of the periodic table?
the elements belonging to group 1 and 2 of the periodic table are s-block elements. it includes elements in which the outermost subshell is s and that have 1 or 2 electrons in their outermost shell.
The type of element grouped on the left side of the periodic table is the what?
the elements on the far far right are called alkali metals (Group 1) and alkali earth metals (group 2)
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
What element is not grouped with others in a family what is the usual atomic structure?
Hydrogen is not in a group with other families. It actually is in group 1 of the Periodic Table. It is a diatomic atom when it combines with other elements.
How many elements make up period 1?
Only two: hydrogen and helium. This corresponds to the fact that there can be only two s orbital electrons in any electron shell, and the first shell has only s orbital electrons.
What is the period on the periodic table for helium?
1
What are the elements in the first column or group?
Columns are periods, and is different to group. On the Periodic Table; Column = Group Row = Period Group 1 (Top to bottom) = Hydrogen, Lithium, Sodium, Potassium, Rubidium, Cesium, Francium Period 1 (Left to Right) = Hydrogen, Helium
