In atomic models balls represent an atom
Now if an atom like carbon has four holes it means it can bond with four atoms. It has valency = 4.
The atomic number of carbon is 6
the configuration is 1s2 2s2 2p2
So due to four valence electrons it can bind with four other atoms and thus we have four holes in carbon ball
The hydrogen show a valency of one
the atomic number of hydrogen = 1
its configuration is 1s1
So it can bind with one atom (max) thus we have one hole in hydrogen ball
Compounds in order of increasing acidity will be written as d<c<b<a.
<h3>What is acidity?</h3>
The quantity of hydroxyl ions that a basic molecule may create in an aqueous solution is what is known as the acidity of bases. The quantity of hydronium ions that a substance may create in an aqueous solution determines how basic an acid is.
a, b are more acidic than c and d because of OH group attached to sp2 hybridised carbon which provide resonance stability for conjugate base
in c f has -I effect which increases acidity in a, NO2 has -m effect which increases acidity so increasing order is d<c<b<a
that is cyclohexanol < 2,4-difluorocyclohexanol < phenol < 2,4-dinitrophenol
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Answer:
Two similar atoms or different atoms
Explanation:
A molecule is made up of at least two similar atoms or different atoms.
A molecule is the smallest particle of a substance capable of independent existence.
- Monoatomic molecule is made up of one atom
- Diatomic molecule is made up of two atoms bounded together.
- Polyatomic molecule are made up of more than two molecules bounded together.
