Table of Contents
What group and period does helium belong to?
Fact box
| Group | 18 | Melting point |
|---|---|---|
| Period | 1 | Boiling point |
| Block | s | Density (g cm−3) |
| Atomic number | 2 | Relative atomic mass |
| State at 20°C | Gas | Key isotopes |
Does Helium have a family?
Helium is a member of the noble gas family. The noble gases are the elements in Group 18 (VIIIA) of the periodic table.
What is helium on the periodic table?
Gaseous chemical element, symbol: He, atomic number: 2 and atomic weight 4,0026 g/mol. Helium is one of the noble gases of group O in the periodic table. It’s the second lightest element. The main helium source in the world is a series of fields of natural gas in the United States.
Is helium part of the periodic table?
helium (He), chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element (only hydrogen is lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F).
What period on the periodic table are hydrogen and helium in?
first period
The first period has less elements than any other periods in the periodic table. There are only two elements in the first period: hydrogen and helium. We can explain why there is less elements in the first row in modern theories of atomic structure.
What is the element name for helium?
He
Helium (from Greek: ἥλιος, romanized: helios, lit. ‘sun’) is a chemical element with the symbol He and atomic number 2….
| Helium | |
|---|---|
| History | |
| Naming | after Helios, Greek god of the Sun |
| Discovery | Pierre Janssen, Norman Lockyer (1868) |
Why is helium placed where it is on the periodic table?
On the modern periodic table, helium is placed in the p-block instead of s-block. This is because Helium shows similar properties as that of Noble gases. As its properties are similar to the Noble gases, it is placed along with them in group 18 in p-block.
Is helium part of the noble gases family?
Helium, along with neon, argon, krypton, xenon, and radon, is an inert gas (also known as a noble gas) – that is, it does not normally react with other elements to form chemical compounds. Unlike most of these, however, helium is, at least for us, a very common gas. Despite lacking the usual property of such gases – eight electrons in its outer atomic shell – helium is still classified as an inert gas because its outer shell, which holds just two electrons, is still full.
What family does the element holmium belong to?
Holmium is an element of the rare earth family of metals. It has the atomic symbol Ho, atomic number 67, and atomic weight 164.93.
What groups is helium in?
Helium (He), chemical element, inert gas of Group 18 ( noble gases) of the periodic table. The second lightest element (only hydrogen is lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F).
What is the family name for helium?
Helium is in the family VIII A. This family is also called the Noble Gases. or inert gases.