Table of Contents
What chemical family does helium belong to?
Inert Gases
Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
What is the classification of helium?
noble gas
Helium is a chemical element with symbol He and atomic number 2. Classified as a noble gas, Helium is a gas at room temperature.
Why is helium in the noble gas family?
Explanation: Elements in this family have filled outer electron shells. Because their valance electrons are all paired there is little bonding of these electrons. This makes Helium part of the Noble gases as it inert and has a filled outer electron shell.
What family is hydrogen in?
Alkali Metals
Group 1A — The Alkali Metals. Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
How does helium relate to chemistry?
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 does helium belong to?
1
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 |
What are chemical properties of helium?
Helium is a colourless, odourless, insipid and non-toxic gas. It’s less soluble in water than any other gas….Chemical properties of helium – Health effects of helium.
| Atomic number | 2 |
|---|---|
| Density | 0.178*10 -3 g.cm -3 at 20 °C |
| Melting point | – 272.2 (26 atm) °C |
| Boiling point | – 268.9 °C |
How do you identify helium?
Helium (from Greek: ἥλιος, romanized: helios, lit. ‘sun’) is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling and melting point are the lowest among all the elements.
What is the noble gas family?
noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).
What family is neon in?
noble gases
Neon is an element in the family referred to as the inert, rare, or noble gases. Members of this family, in increasing order by atomic number, are helium, neon, argon, krypton, xenon, and radon.