Advertisements
Advertisements
Question
The atoms of which of the following pair of elements are most likely to exist in free state ?
Options
hydrogen and helium
argon and carbon
neon and nitrogen
helium and neon
Advertisements
Solution
helium and neon
Atoms of helium and neon exist in a free state because they are inert gases and chemically inactive.
APPEARS IN
RELATED QUESTIONS
Give two examples of the following :
Solid + Solid mixture
Fill in the blank:
Symbolic expression for a molecule is called _____.
Give the symbol and the number of atoms of the following elements present in sodium chloride.
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
K1+ Cl1-
State the type of element for the following:
Bromine
Give the formula of the following acid:
Nitric
Give the formula of the following acid:
Sulphuric
What does the symbol '→' present in a chemical equation, mean?
What does the symbol '(l)' present in a chemical equation, mean?
Define Alchemy.
