In What Form Do Noble Gases Occur in Nature ?

In what form do noble gases occur in nature?

One Line Answer

Noble gases occur in nature as a monoatomic gas.

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Chapter 3: Atoms and Molecules - Very Short Answers [Page 130]

Chapter 3 Atoms and Molecules
Very Short Answers | Q 37.2 | Page 130

Define: Atomic number

Define: Atomic weight :

In what form does oxygen gas occur in nature ?

An element A forms an oxide A2O5.

What is the valency of element A ?

An element X forms the following compounds with hydrogen, carbon and oxygen :

H₂X, CX₂, XO₂, XO₃

State the three valencies of element X which are illustrated by these compounds.

Why are the symbols and formulae of substances important?

Give one example of a triatomic molecule

Give a reason why –

Ozone is considered triatomic, but phosphorus a tetratomic molecule.

If a molecule is made of similar kinds of atoms, then it is called ______ atomic molecule.

Define: Atomicity.